{"id":"https://openalex.org/W2005353254","doi":"https://doi.org/10.1073/pnas.93.5.1930","title":"Evolution of chlorophyll and bacteriochlorophyll: the problem of invariant sites in sequence analysis.","display_name":"Evolution of chlorophyll and bacteriochlorophyll: the problem of invariant sites in sequence analysis.","publication_year":1996,"publication_date":"1996-03-05","ids":{"openalex":"https://openalex.org/W2005353254","doi":"https://doi.org/10.1073/pnas.93.5.1930","mag":"2005353254","pmid":"https://pubmed.ncbi.nlm.nih.gov/8700861","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/39885"},"language":"en","primary_location":{"id":"doi:10.1073/pnas.93.5.1930","doi":"https://doi.org/10.1073/pnas.93.5.1930","is_oa":false,"landing_page_url":"https://doi.org/10.1073/pnas.93.5.1930","pdf_url":null,"source":{"id":"https://openalex.org/S125754415","display_name":"Proceedings of the National Academy of Sciences","issn_l":"0027-8424","issn":["0027-8424","1091-6490"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320052","host_organization_name":"National Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310320052"],"host_organization_lineage_names":["National Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://europepmc.org/pmc/articles/PMC39885","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5063295409","display_name":"Peter J. Lockhart","orcid":"https://orcid.org/0000-0002-1862-5688","observed_orcids":["https://orcid.org/0000-0002-1862-5688"]},"institutions":[{"id":"https://openalex.org/I51158804","display_name":"Massey University","ror":"https://ror.org/052czxv31","country_code":"NZ","type":"education","lineage":["https://openalex.org/I51158804"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"P J Lockhart","raw_affiliation_strings":["Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand","institution_ids":["https://openalex.org/I51158804"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111847483","display_name":"A.W.D. Larkum","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I51158804","display_name":"Massey University","ror":"https://ror.org/052czxv31","country_code":"NZ","type":"education","lineage":["https://openalex.org/I51158804"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"A W Larkum","raw_affiliation_strings":["Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand","institution_ids":["https://openalex.org/I51158804"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035720494","display_name":"Mike Steel","orcid":"https://orcid.org/0000-0001-7015-4644","observed_orcids":["https://orcid.org/0000-0001-7015-4644"]},"institutions":[{"id":"https://openalex.org/I51158804","display_name":"Massey University","ror":"https://ror.org/052czxv31","country_code":"NZ","type":"education","lineage":["https://openalex.org/I51158804"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"M Steel","raw_affiliation_strings":["Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand","institution_ids":["https://openalex.org/I51158804"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5065109969","display_name":"Peter J. Waddell","orcid":"https://orcid.org/0000-0003-1412-1682","observed_orcids":["https://orcid.org/0000-0003-1412-1682"]},"institutions":[{"id":"https://openalex.org/I51158804","display_name":"Massey University","ror":"https://ror.org/052czxv31","country_code":"NZ","type":"education","lineage":["https://openalex.org/I51158804"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"P J Waddell","raw_affiliation_strings":["Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand","institution_ids":["https://openalex.org/I51158804"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5111374600","display_name":"David Penny","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I51158804","display_name":"Massey University","ror":"https://ror.org/052czxv31","country_code":"NZ","type":"education","lineage":["https://openalex.org/I51158804"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"D Penny","raw_affiliation_strings":["Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Molecular Genetics Unit, School of Biological Sciences, Massey University, Palmerston North New Zealand","institution_ids":["https://openalex.org/I51158804"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I51158804"],"apc_list":null,"apc_paid":null,"fwci":5.0552,"has_fulltext":false,"cited_by_count":217,"citation_normalized_percentile":{"value":0.96234703,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"93","issue":"5","first_page":"1930","last_page":"1934"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10303","display_name":"Photosynthetic Processes and Mechanisms","score":0.8378999829292297,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10303","display_name":"Photosynthetic Processes and Mechanisms","score":0.8378999829292297,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10015","display_name":"Genomics and Phylogenetic Studies","score":0.08179999887943268,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11879","display_name":"Protist diversity and phylogeny","score":0.020500000566244125,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/photosynthetic-pigments","display_name":"photosynthetic pigments","score":0.8669999837875366},{"id":"https://openalex.org/keywords/oxygenic-photosynthesis","display_name":"oxygenic photosynthesis","score":0.765999972820282},{"id":"https://openalex.org/keywords/anoxygenic-photosynthesis","display_name":"anoxygenic photosynthesis","score":0.9990000128746033},{"id":"https://openalex.org/keywords/phylogenetic-tree-construction","display_name":"phylogenetic tree construction","score":0.6579999923706055},{"id":"https://openalex.org/keywords/homologous-genes","display_name":"homologous genes","score":0.7020000219345093}],"concepts":[{"id":"https://openalex.org/C2780784151","wikidata":"https://www.wikidata.org/wiki/Q1992180","display_name":"Bacteriochlorophyll","level":3,"score":0.915268063545227},{"id":"https://openalex.org/C98614847","wikidata":"https://www.wikidata.org/wiki/Q975983","display_name":"Anoxygenic photosynthesis","level":4,"score":0.8593132495880127},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.6781558394432068},{"id":"https://openalex.org/C2776373379","wikidata":"https://www.wikidata.org/wiki/Q43177","display_name":"Chlorophyll","level":2,"score":0.5909887552261353},{"id":"https://openalex.org/C147604119","wikidata":"https://www.wikidata.org/wiki/Q890481","display_name":"Chlorosome","level":4,"score":0.5618267059326172},{"id":"https://openalex.org/C197322856","wikidata":"https://www.wikidata.org/wiki/Q335183","display_name":"Phototroph","level":3,"score":0.5175372958183289},{"id":"https://openalex.org/C78458016","wikidata":"https://www.wikidata.org/wiki/Q840400","display_name":"Evolutionary biology","level":1,"score":0.4607383608818054},{"id":"https://openalex.org/C183688256","wikidata":"https://www.wikidata.org/wiki/Q11982","display_name":"Photosynthesis","level":2,"score":0.43535593152046204},{"id":"https://openalex.org/C2779520027","wikidata":"https://www.wikidata.org/wiki/Q211118","display_name":"Protochlorophyllide","level":4,"score":0.42405790090560913},{"id":"https://openalex.org/C62142553","wikidata":"https://www.wikidata.org/wiki/Q200312","display_name":"Convergent evolution","level":4,"score":0.4182673394680023},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.41395482420921326},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.31601813435554504},{"id":"https://openalex.org/C69305403","wikidata":"https://www.wikidata.org/wiki/Q47263","display_name":"Chloroplast","level":3,"score":0.30110812187194824},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.2784707844257355},{"id":"https://openalex.org/C90132467","wikidata":"https://www.wikidata.org/wiki/Q171184","display_name":"Phylogenetics","level":3,"score":0.2682592570781708}],"mesh":[{"descriptor_ui":"D000458","descriptor_name":"Cyanobacteria","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D000458","descriptor_name":"Cyanobacteria","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D000458","descriptor_name":"Cyanobacteria","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D001429","descriptor_name":"Bacteriochlorophylls","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D001429","descriptor_name":"Bacteriochlorophylls","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D001429","descriptor_name":"Bacteriochlorophylls","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D002734","descriptor_name":"Chlorophyll","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D002734","descriptor_name":"Chlorophyll","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D002734","descriptor_name":"Chlorophyll","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D003062","descriptor_name":"Codon","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003062","descriptor_name":"Codon","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003062","descriptor_name":"Codon","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D009591","descriptor_name":"Nitrogenase","qualifier_ui":"Q000235","qualifier_name":"genetics","is_major_topic":false},{"descriptor_ui":"D009591","descriptor_name":"Nitrogenase","qualifier_ui":"Q000235","qualifier_name":"genetics","is_major_topic":false},{"descriptor_ui":"D009591","descriptor_name":"Nitrogenase","qualifier_ui":"Q000235","qualifier_name":"genetics","is_major_topic":false},{"descriptor_ui":"D010088","descriptor_name":"Oxidoreductases","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D010088","descriptor_name":"Oxidoreductases","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D010088","descriptor_name":"Oxidoreductases","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D010788","descriptor_name":"Photosynthesis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D010788","descriptor_name":"Photosynthesis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D010788","descriptor_name":"Photosynthesis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D010802","descriptor_name":"Phylogeny","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010802","descriptor_name":"Phylogeny","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010802","descriptor_name":"Phylogeny","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010940","descriptor_name":"Plant Proteins","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D010940","descriptor_name":"Plant Proteins","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D010940","descriptor_name":"Plant Proteins","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":false},{"descriptor_ui":"D012689","descriptor_name":"Sequence Homology, Nucleic Acid","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012689","descriptor_name":"Sequence Homology, Nucleic Acid","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012689","descriptor_name":"Sequence Homology, Nucleic Acid","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":4,"locations":[{"id":"doi:10.1073/pnas.93.5.1930","doi":"https://doi.org/10.1073/pnas.93.5.1930","is_oa":false,"landing_page_url":"https://doi.org/10.1073/pnas.93.5.1930","pdf_url":null,"source":{"id":"https://openalex.org/S125754415","display_name":"Proceedings of the National Academy of Sciences","issn_l":"0027-8424","issn":["0027-8424","1091-6490"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320052","host_organization_name":"National Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310320052"],"host_organization_lineage_names":["National Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences","raw_type":"journal-article"},{"id":"pmh:oai:europepmc.org:73523","doi":null,"is_oa":true,"landing_page_url":"http://europepmc.org/pmc/articles/PMC39885","pdf_url":null,"source":{"id":"https://openalex.org/S4306400806","display_name":"Europe PMC (PubMed Central)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1303153112","host_organization_name":"European Bioinformatics Institute","host_organization_lineage":["https://openalex.org/I1303153112"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:39885","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/39885","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proc Natl Acad Sci U S A","raw_type":"Text"},{"id":"pmid:8700861","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/8700861","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences of the United States of America","raw_type":"Journal Article"}],"best_oa_location":{"id":"pmh:oai:europepmc.org:73523","doi":null,"is_oa":true,"landing_page_url":"http://europepmc.org/pmc/articles/PMC39885","pdf_url":null,"source":{"id":"https://openalex.org/S4306400806","display_name":"Europe PMC (PubMed Central)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1303153112","host_organization_name":"European Bioinformatics Institute","host_organization_lineage":["https://openalex.org/I1303153112"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"","raw_type":"Text"},"sustainable_development_goals":[],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1800445109","https://openalex.org/W1991198925","https://openalex.org/W2000220930","https://openalex.org/W2000998635","https://openalex.org/W2015342895","https://openalex.org/W2018466639","https://openalex.org/W2020609555","https://openalex.org/W2025059047","https://openalex.org/W2034767282","https://openalex.org/W2037667459","https://openalex.org/W2090995971","https://openalex.org/W2129798238","https://openalex.org/W2163006245","https://openalex.org/W4239903662"],"related_works":["https://openalex.org/W2443935946","https://openalex.org/W224169231","https://openalex.org/W1991198925","https://openalex.org/W2107915883","https://openalex.org/W2132414177","https://openalex.org/W2025059047","https://openalex.org/W2053570580","https://openalex.org/W2134304337","https://openalex.org/W7096349446","https://openalex.org/W7135021511"],"abstract_inverted_index":{"Competing":[0],"hypotheses":[1],"seek":[2],"to":[3,52,86,120,161],"explain":[4],"the":[5,23,62,69,77,105,121,131,140,169,185],"evolution":[6,63,70,186],"of":[7,12,41,64,71,79,133,143,148,164,173,187],"oxygenic":[8,174],"and":[9,19,47,126,175,189],"anoxygenic":[10,176],"processes":[11],"photosynthesis.":[13],"Since":[14],"chlorophyll":[15,32,46,188],"is":[16,60],"less":[17],"reduced":[18],"precedes":[20],"bacteriochlorophyll":[21,34,48,65],"on":[22],"modern":[24],"biosynthetic":[25,49,154],"pathway,":[26],"it":[27],"has":[28,167],"been":[29],"proposed":[30],"that":[31,44,61,76],"preceded":[33],"in":[35,82,88,115],"its":[36],"evolution.":[37],"However,":[38,109],"recent":[39,170],"analyses":[40],"nucleotide":[42,107],"sequences":[43,95],"encode":[45],"enzymes":[50],"appear":[51],"provide":[53],"support":[54],"for":[55,184],"an":[56,181],"alternative":[57,182],"hypothesis.":[58],"This":[59],"occurred":[66],"earlier":[67],"than":[68],"chlorophyll.":[72],"Here":[73],"we":[74],"demonstrate":[75],"presence":[78,147],"invariant":[80,102,117,149],"sites":[81,103,118,135],"sequence":[83],"datasets":[84],"leads":[85],"inconsistency":[87],"tree":[89],"building":[90],"(including":[91],"maximum-likelihood":[92],"methods).":[93],"Homologous":[94],"with":[96],"different":[97,110,127,141],"biological":[98,128],"functions":[99],"often":[100],"share":[101],"at":[104],"same":[106],"positions.":[108],"constraints":[111],"can":[112,136],"also":[113],"result":[114],"additional":[116],"unique":[119,160],"genes,":[122,166],"which":[123],"have":[124],"specific":[125],"functions.":[129],"Consequently,":[130],"distribution":[132],"these":[134,165],"be":[137],"uneven":[138],"between":[139],"types":[142],"homologous":[144],"genes.":[145],"The":[146],"sites,":[150],"shared":[151],"by":[152],"related":[153],"genes":[155],"as":[156,158],"well":[157],"those":[159],"only":[162],"some":[163],"misled":[168],"evolutionary":[171],"analysis":[172],"photosynthetic":[177],"pigments.":[178],"We":[179],"evaluate":[180],"scheme":[183],"bacteriochlorophyll.":[190]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":3},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":7},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":2},{"year":2012,"cited_by_count":8}],"updated_date":"2026-10-28T10:33:24.094632","created_date":"2016-06-24T00:00:00"}
