{"id":"https://openalex.org/W3003527621","doi":"https://doi.org/10.1109/access.2020.2970914","title":"Distributed Energy Efficiency Optimization for Multi-User Cognitive Radio Networks Over MIMO Interference Channels: A Non-Cooperative Game Approach","display_name":"Distributed Energy Efficiency Optimization for Multi-User Cognitive Radio Networks Over MIMO Interference Channels: A Non-Cooperative Game Approach","publication_year":2020,"publication_date":"2020-01-01","ids":{"openalex":"https://openalex.org/W3003527621","doi":"https://doi.org/10.1109/access.2020.2970914","mag":"3003527621"},"language":"en","primary_location":{"id":"doi:10.1109/access.2020.2970914","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2020.2970914","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/8948470/08977533.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://ieeexplore.ieee.org/ielx7/6287639/8948470/08977533.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100387099","display_name":"Ning Wang","orcid":"https://orcid.org/0000-0001-9403-3417"},"institutions":[{"id":"https://openalex.org/I38877650","display_name":"Zhengzhou University","ror":"https://ror.org/04ypx8c21","country_code":"CN","type":"education","lineage":["https://openalex.org/I38877650"]},{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ning Wang","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","School of Information Engineering, Zhengzhou University, Zhengzhou, China"],"raw_orcid":"https://orcid.org/0000-0001-9403-3417","affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]},{"raw_affiliation_string":"School of Information Engineering, Zhengzhou University, Zhengzhou, China","institution_ids":["https://openalex.org/I38877650"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059295869","display_name":"Shujun Han","orcid":"https://orcid.org/0000-0002-6257-7732"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shujun Han","raw_affiliation_strings":["School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0002-6257-7732","affiliations":[{"raw_affiliation_string":"School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001453232","display_name":"Yanhui Lu","orcid":"https://orcid.org/0000-0002-7905-2561"},"institutions":[{"id":"https://openalex.org/I38877650","display_name":"Zhengzhou University","ror":"https://ror.org/04ypx8c21","country_code":"CN","type":"education","lineage":["https://openalex.org/I38877650"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yanhui Lu","raw_affiliation_strings":["School of Information Engineering, Zhengzhou University, Zhengzhou, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Information Engineering, Zhengzhou University, Zhengzhou, China","institution_ids":["https://openalex.org/I38877650"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100686240","display_name":"Jun Zhu","orcid":"https://orcid.org/0000-0002-1773-548X"},"institutions":[{"id":"https://openalex.org/I4210087596","display_name":"Qualcomm (United States)","ror":"https://ror.org/002zrf773","country_code":"US","type":"company","lineage":["https://openalex.org/I4210087596"]},{"id":"https://openalex.org/I4210111675","display_name":"Market Matters","ror":"https://ror.org/021yan307","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I4210111675"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jun Zhu","raw_affiliation_strings":["Qualcomm Inc., San Diego, USA"],"raw_orcid":"https://orcid.org/0000-0002-1773-548X","affiliations":[{"raw_affiliation_string":"Qualcomm Inc., San Diego, USA","institution_ids":["https://openalex.org/I4210087596","https://openalex.org/I4210111675"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5013867024","display_name":"Wei Xu","orcid":"https://orcid.org/0000-0001-9341-8382"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wei Xu","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"raw_orcid":"https://orcid.org/0000-0001-9341-8382","affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1850,"currency":"USD","value_usd":1850},"apc_paid":{"value":1850,"currency":"USD","value_usd":1850},"fwci":0.6244,"has_fulltext":true,"cited_by_count":8,"citation_normalized_percentile":{"value":0.66880585,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":97},"biblio":{"volume":"8","issue":null,"first_page":"26701","last_page":"26714"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10579","display_name":"Cognitive Radio Networks and Spectrum Sensing","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.7122470140457153},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.6767219305038452},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6637834310531616},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.6543983817100525},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.6102311611175537},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.5763470530509949},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.5660346746444702},{"id":"https://openalex.org/keywords/nash-equilibrium","display_name":"Nash equilibrium","score":0.5557764172554016},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.5243375897407532},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.5114964246749878},{"id":"https://openalex.org/keywords/efficient-energy-use","display_name":"Efficient energy use","score":0.48460090160369873},{"id":"https://openalex.org/keywords/zero-forcing-precoding","display_name":"Zero-forcing precoding","score":0.4466804563999176},{"id":"https://openalex.org/keywords/transmitter-power-output","display_name":"Transmitter power output","score":0.4327279031276703},{"id":"https://openalex.org/keywords/single-antenna-interference-cancellation","display_name":"Single antenna interference cancellation","score":0.4316812753677368},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.412234365940094},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.36501049995422363},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.25064921379089355},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.21377283334732056},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.20243966579437256},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.20193704962730408},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.17889100313186646},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.10606113076210022}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7122470140457153},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.6767219305038452},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6637834310531616},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.6543983817100525},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.6102311611175537},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.5763470530509949},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.5660346746444702},{"id":"https://openalex.org/C46814582","wikidata":"https://www.wikidata.org/wiki/Q23389","display_name":"Nash equilibrium","level":2,"score":0.5557764172554016},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.5243375897407532},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.5114964246749878},{"id":"https://openalex.org/C2742236","wikidata":"https://www.wikidata.org/wiki/Q924713","display_name":"Efficient energy use","level":2,"score":0.48460090160369873},{"id":"https://openalex.org/C155437304","wikidata":"https://www.wikidata.org/wiki/Q8069444","display_name":"Zero-forcing precoding","level":5,"score":0.4466804563999176},{"id":"https://openalex.org/C65422117","wikidata":"https://www.wikidata.org/wiki/Q358527","display_name":"Transmitter power output","level":4,"score":0.4327279031276703},{"id":"https://openalex.org/C83204339","wikidata":"https://www.wikidata.org/wiki/Q7523915","display_name":"Single antenna interference cancellation","level":3,"score":0.4316812753677368},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.412234365940094},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.36501049995422363},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.25064921379089355},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.21377283334732056},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.20243966579437256},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.20193704962730408},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.17889100313186646},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.10606113076210022},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/access.2020.2970914","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2020.2970914","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/8948470/08977533.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:262226d251024af18be4aaa82870be05","is_oa":true,"landing_page_url":"https://doaj.org/article/262226d251024af18be4aaa82870be05","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Access, Vol 8, Pp 26701-26714 (2020)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/access.2020.2970914","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2020.2970914","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/8948470/08977533.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.9200000166893005,"id":"https://metadata.un.org/sdg/7"}],"awards":[{"id":"https://openalex.org/G2430482747","display_name":null,"funder_award_id":"61401402","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4378559457","display_name":null,"funder_award_id":"61941115","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6191567456","display_name":"5G\u5927\u89c4\u6a21MIMO\u5728\u975e\u7406\u60f3\u7cfb\u7edf\u7ea6\u675f\u4e0b\u4fdd\u5bc6\u4f20\u8f93\u6280\u672f\u7814\u7a76","funder_award_id":"61771431","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8882420975","display_name":null,"funder_award_id":"61871109","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3003527621.pdf","grobid_xml":"https://content.openalex.org/works/W3003527621.grobid-xml"},"referenced_works_count":43,"referenced_works":["https://openalex.org/W656369140","https://openalex.org/W1568721963","https://openalex.org/W1922992366","https://openalex.org/W1965804046","https://openalex.org/W1973084154","https://openalex.org/W1988942839","https://openalex.org/W2018956485","https://openalex.org/W2032024613","https://openalex.org/W2039396229","https://openalex.org/W2039404515","https://openalex.org/W2066511476","https://openalex.org/W2076916716","https://openalex.org/W2083241029","https://openalex.org/W2101412892","https://openalex.org/W2108680348","https://openalex.org/W2108991453","https://openalex.org/W2116770996","https://openalex.org/W2125113829","https://openalex.org/W2141162475","https://openalex.org/W2149803021","https://openalex.org/W2152359249","https://openalex.org/W2152587757","https://openalex.org/W2153090463","https://openalex.org/W2160998689","https://openalex.org/W2162986857","https://openalex.org/W2168160940","https://openalex.org/W2173530811","https://openalex.org/W2180192268","https://openalex.org/W2207534461","https://openalex.org/W2252405342","https://openalex.org/W2337134536","https://openalex.org/W2417311498","https://openalex.org/W2479774998","https://openalex.org/W2493981658","https://openalex.org/W2508286506","https://openalex.org/W2758940484","https://openalex.org/W2963264940","https://openalex.org/W2963977506","https://openalex.org/W3102994165","https://openalex.org/W3124447267","https://openalex.org/W4229842170","https://openalex.org/W6682468974","https://openalex.org/W7005746811"],"related_works":["https://openalex.org/W2111825998","https://openalex.org/W2326544815","https://openalex.org/W1973158664","https://openalex.org/W1731022149","https://openalex.org/W1996933839","https://openalex.org/W2082469387","https://openalex.org/W1976511355","https://openalex.org/W2083202929","https://openalex.org/W2064335375","https://openalex.org/W1985632843"],"abstract_inverted_index":{"Energy":[0],"efficiency":[1,68],"(EE)":[2],"optimization":[3,36,131,152],"is":[4,38,98,120,125,146,155,164,198],"investigated":[5],"for":[6,116],"a":[7,41,117],"multi-user":[8,182],"cognitive":[9],"radio":[10],"network":[11],"(CRN)":[12],"over":[13],"multiple-input-multiple-output":[14],"(MIMO)":[15],"interference":[16,95,139,183],"channels":[17],"(ICs).":[18],"To":[19],"reduce":[20],"the":[21,29,34,50,72,83,89,101,113,128,135,160,169,179,195,201,207],"system":[22,202],"overhead":[23],"due":[24],"to":[25,82,133,158,166,168,177],"information":[26,188],"exchange":[27],"among":[28],"secondary":[30],"CR":[31],"uses":[32],"(SUs),":[33],"EE":[35,130,151],"problem":[37,132],"formulated":[39,102],"as":[40],"non-cooperative":[42,103],"game,":[43],"where":[44],"each":[45,61],"SU":[46,52,63],"transmitter":[47],"competes":[48],"against":[49],"other":[51],"pairs":[53],"by":[54],"optimizing":[55],"its":[56,66],"transmit":[57,85],"covariance":[58],"matrix.":[59],"Specifically,":[60],"multi-antenna":[62],"maximizes":[64],"locally":[65],"energy":[67,79],"in":[69,127],"terms":[70],"of":[71,74,181,194],"number":[73],"bits":[75],"transmitted":[76],"per":[77],"unit":[78],"consumption,":[80],"subject":[81],"per-SU":[84],"power":[86],"constraint":[87,140],"and":[88,112,184,200],"primary":[90],"user":[91],"(PU)":[92],"perceived":[93,138],"total":[94],"constraint.":[96],"It":[97],"proved":[99],"that":[100,142],"game":[104],"admits":[105],"at":[106],"least":[107],"one":[108],"Nash":[109],"equilibrium":[110],"(NE),":[111],"sufficient":[114],"condition":[115],"unique":[118,161],"NE":[119],"derived":[121],"subsequently.":[122],"Primal":[123],"decomposition":[124],"employed":[126,176],"local":[129],"relax":[134],"coupling":[136],"PU":[137],"such":[141],"fully":[143],"distributed":[144,149],"operation":[145],"allowed.":[147],"A":[148],"iterative":[150],"algorithm":[153],"(DIEEOA)":[154],"then":[156],"proposed":[157,196],"obtain":[159],"NE,":[162],"which":[163],"shown":[165],"converge":[167],"global":[170],"optimum.":[171],"Linear":[172],"precoding":[173],"techniques":[174],"are":[175,209],"mitigate":[178],"impacts":[180,205],"imperfect":[185],"channel":[186],"state":[187],"(CSI).":[189],"Through":[190],"numerical":[191],"simulations,":[192],"effectiveness":[193],"scheme":[197],"validated":[199],"setting":[203],"parameters'":[204],"on":[206],"performance":[208],"studied.":[210]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":3}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
