{"id":"https://openalex.org/W2116924935","doi":"https://doi.org/10.1016/s0012-365x(03)00272-3","title":"On group-divisible designs with block size four and group-type 6um1","display_name":"On group-divisible designs with block size four and group-type 6um1","publication_year":2003,"publication_date":"2003-10-09","ids":{"openalex":"https://openalex.org/W2116924935","doi":"https://doi.org/10.1016/s0012-365x(03)00272-3","mag":"2116924935"},"language":"en","primary_location":{"id":"doi:10.1016/s0012-365x(03)00272-3","is_oa":true,"landing_page_url":"https://doi.org/10.1016/s0012-365x(03)00272-3","pdf_url":"https://www.sciencedirect.com/science/article/pii/S0012365X03002723/pdf","source":{"id":"https://openalex.org/S18902827","display_name":"Discrete Mathematics","issn_l":"0012-365X","issn":["0012-365X","1872-681X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Discrete Mathematics","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.sciencedirect.com/science/article/pii/S0012365X03002723/pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5029449317","display_name":"Gennian Ge","orcid":"https://orcid.org/0000-0002-1535-0754"},"institutions":[{"id":"https://openalex.org/I76130692","display_name":"Zhejiang University","ror":"https://ror.org/00a2xv884","country_code":"CN","type":"education","lineage":["https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Gennian Ge","raw_affiliation_strings":["Department of Mathematics, Zhejiang University, Hangzhou 310027, Zhejiang, People's Republic of China","Department of mathematics, Suzhou University, Suzhou, P. R. China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mathematics, Zhejiang University, Hangzhou 310027, Zhejiang, People's Republic of China","institution_ids":["https://openalex.org/I76130692"]},{"raw_affiliation_string":"Department of mathematics, Suzhou University, Suzhou, P. R. China","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5111806443","display_name":"Rolf S. Rees","orcid":null},"institutions":[{"id":"https://openalex.org/I130438778","display_name":"Memorial University of Newfoundland","ror":"https://ror.org/04haebc03","country_code":"CA","type":"education","lineage":["https://openalex.org/I130438778"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"R Rees","raw_affiliation_strings":["Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John's, NF, Canada A1C 5S7","Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John\u2019s, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John's, NF, Canada A1C 5S7","institution_ids":["https://openalex.org/I130438778"]},{"raw_affiliation_string":"Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John\u2019s, Canada","institution_ids":["https://openalex.org/I130438778"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5029449317"],"corresponding_institution_ids":["https://openalex.org/I76130692"],"apc_list":{"value":3320,"currency":"USD","value_usd":3320},"apc_paid":null,"fwci":5.098,"has_fulltext":true,"cited_by_count":72,"citation_normalized_percentile":{"value":0.95360519,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"279","issue":"1-3","first_page":"247","last_page":"265"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","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/T11797","display_name":"graph theory and CDMA systems","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/T11130","display_name":"Coding theory and cryptography","score":0.998199999332428,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10849","display_name":"Finite Group Theory Research","score":0.9926000237464905,"subfield":{"id":"https://openalex.org/subfields/2607","display_name":"Discrete Mathematics and Combinatorics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.8742650747299194},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.750795304775238},{"id":"https://openalex.org/keywords/group","display_name":"Group (periodic table)","score":0.6441450715065002},{"id":"https://openalex.org/keywords/block-size","display_name":"Block size","score":0.6158100962638855},{"id":"https://openalex.org/keywords/block","display_name":"Block (permutation group theory)","score":0.6096031665802002},{"id":"https://openalex.org/keywords/type","display_name":"Type (biology)","score":0.5992751121520996},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.5274838805198669},{"id":"https://openalex.org/keywords/spectrum","display_name":"Spectrum (functional analysis)","score":0.4848417043685913},{"id":"https://openalex.org/keywords/construct","display_name":"Construct (python library)","score":0.4714302122592926},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4552624523639679},{"id":"https://openalex.org/keywords/automorphism-group","display_name":"Automorphism group","score":0.4395897090435028},{"id":"https://openalex.org/keywords/automorphism","display_name":"Automorphism","score":0.08548218011856079},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.06353738903999329}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.8742650747299194},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.750795304775238},{"id":"https://openalex.org/C2781311116","wikidata":"https://www.wikidata.org/wiki/Q83306","display_name":"Group (periodic table)","level":2,"score":0.6441450715065002},{"id":"https://openalex.org/C41431624","wikidata":"https://www.wikidata.org/wiki/Q1053357","display_name":"Block size","level":3,"score":0.6158100962638855},{"id":"https://openalex.org/C2777210771","wikidata":"https://www.wikidata.org/wiki/Q4927124","display_name":"Block (permutation group theory)","level":2,"score":0.6096031665802002},{"id":"https://openalex.org/C2777299769","wikidata":"https://www.wikidata.org/wiki/Q3707858","display_name":"Type (biology)","level":2,"score":0.5992751121520996},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.5274838805198669},{"id":"https://openalex.org/C156778621","wikidata":"https://www.wikidata.org/wiki/Q1365748","display_name":"Spectrum (functional analysis)","level":2,"score":0.4848417043685913},{"id":"https://openalex.org/C2780801425","wikidata":"https://www.wikidata.org/wiki/Q5164392","display_name":"Construct (python library)","level":2,"score":0.4714302122592926},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4552624523639679},{"id":"https://openalex.org/C2988750069","wikidata":"https://www.wikidata.org/wiki/Q60790315","display_name":"Automorphism group","level":3,"score":0.4395897090435028},{"id":"https://openalex.org/C118712358","wikidata":"https://www.wikidata.org/wiki/Q782566","display_name":"Automorphism","level":2,"score":0.08548218011856079},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.06353738903999329},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/s0012-365x(03)00272-3","is_oa":true,"landing_page_url":"https://doi.org/10.1016/s0012-365x(03)00272-3","pdf_url":"https://www.sciencedirect.com/science/article/pii/S0012365X03002723/pdf","source":{"id":"https://openalex.org/S18902827","display_name":"Discrete Mathematics","issn_l":"0012-365X","issn":["0012-365X","1872-681X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Discrete Mathematics","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1016/s0012-365x(03)00272-3","is_oa":true,"landing_page_url":"https://doi.org/10.1016/s0012-365x(03)00272-3","pdf_url":"https://www.sciencedirect.com/science/article/pii/S0012365X03002723/pdf","source":{"id":"https://openalex.org/S18902827","display_name":"Discrete Mathematics","issn_l":"0012-365X","issn":["0012-365X","1872-681X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Discrete Mathematics","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320334593","display_name":"Natural Sciences and Engineering Research Council of Canada","ror":"https://ror.org/01h531d29"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2116924935.pdf","grobid_xml":"https://content.openalex.org/works/W2116924935.grobid-xml"},"referenced_works_count":20,"referenced_works":["https://openalex.org/W19060843","https://openalex.org/W296368945","https://openalex.org/W593586575","https://openalex.org/W1965142549","https://openalex.org/W1971956496","https://openalex.org/W1985957440","https://openalex.org/W1998125870","https://openalex.org/W1999371557","https://openalex.org/W2003291535","https://openalex.org/W2015431324","https://openalex.org/W2023231358","https://openalex.org/W2030620609","https://openalex.org/W2053133717","https://openalex.org/W2069955765","https://openalex.org/W2148118169","https://openalex.org/W2349258217","https://openalex.org/W2792810737","https://openalex.org/W4230766887","https://openalex.org/W6600745386","https://openalex.org/W6656296304"],"related_works":["https://openalex.org/W1978042415","https://openalex.org/W2065814026","https://openalex.org/W1978202062","https://openalex.org/W2383668776","https://openalex.org/W3080101714","https://openalex.org/W2001578046","https://openalex.org/W4292121736","https://openalex.org/W2006221247","https://openalex.org/W2986810775","https://openalex.org/W1975184941"],"abstract_inverted_index":null,"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":4},{"year":2012,"cited_by_count":5}],"updated_date":"2026-08-21T09:56:20.448147","created_date":"2025-10-10T00:00:00"}