{"id":"https://openalex.org/W2084195994","doi":"https://doi.org/10.1016/0012-365x(91)90137-q","title":"Incomplete self-orthogonal latin squares ISOLS(6m + 6, 2m) exist for all m","display_name":"Incomplete self-orthogonal latin squares ISOLS(6m + 6, 2m) exist for all m","publication_year":1991,"publication_date":"1991-02-01","ids":{"openalex":"https://openalex.org/W2084195994","doi":"https://doi.org/10.1016/0012-365x(91)90137-q","mag":"2084195994"},"language":"en","primary_location":{"id":"doi:10.1016/0012-365x(91)90137-q","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0012-365x(91)90137-q","pdf_url":null,"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":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5007878890","display_name":"Katherine Heinrich","orcid":null},"institutions":[{"id":"https://openalex.org/I18014758","display_name":"Simon Fraser University","ror":"https://ror.org/0213rcc28","country_code":"CA","type":"education","lineage":["https://openalex.org/I18014758"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"Katherine Heinrich","raw_affiliation_strings":["Simon Fraser University, Burnaby, B.C., Canada, V5A 1S6#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Simon Fraser University, Burnaby, B.C., Canada, V5A 1S6#TAB#","institution_ids":["https://openalex.org/I18014758"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083700562","display_name":"Lisheng Wu","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Lisheng Wu","raw_affiliation_strings":["Suzhou University, Suzhou, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Suzhou University, Suzhou, China","institution_ids":[]}]},{"author_position":"last","author":{"id":null,"display_name":"L. Zhu","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"L. Zhu","raw_affiliation_strings":["Suzhou University, Suzhou, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Suzhou University, Suzhou, China","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5007878890"],"corresponding_institution_ids":["https://openalex.org/I18014758"],"apc_list":{"value":3000,"currency":"USD","value_usd":3000},"apc_paid":null,"fwci":1.5088,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.82041771,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"87","issue":"3","first_page":"281","last_page":"290"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":1.0,"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":1.0,"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/T10849","display_name":"Finite Group Theory Research","score":0.9818999767303467,"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"}},{"id":"https://openalex.org/T11130","display_name":"Coding theory and cryptography","score":0.9801999926567078,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.887971043586731},{"id":"https://openalex.org/keywords/latin-square","display_name":"Latin square","score":0.7008641958236694},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.6721526384353638},{"id":"https://openalex.org/keywords/orthogonal-array","display_name":"Orthogonal array","score":0.4576602876186371},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4389439523220062},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.16695469617843628}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.887971043586731},{"id":"https://openalex.org/C158887663","wikidata":"https://www.wikidata.org/wiki/Q679367","display_name":"Latin square","level":4,"score":0.7008641958236694},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.6721526384353638},{"id":"https://openalex.org/C42632107","wikidata":"https://www.wikidata.org/wiki/Q2031860","display_name":"Orthogonal array","level":3,"score":0.4576602876186371},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4389439523220062},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.16695469617843628},{"id":"https://openalex.org/C83469408","wikidata":"https://www.wikidata.org/wiki/Q2036525","display_name":"Taguchi methods","level":2,"score":0.0},{"id":"https://openalex.org/C100544194","wikidata":"https://www.wikidata.org/wiki/Q41760","display_name":"Fermentation","level":2,"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/C70262065","wikidata":"https://www.wikidata.org/wiki/Q427652","display_name":"Rumen","level":3,"score":0.0},{"id":"https://openalex.org/C31903555","wikidata":"https://www.wikidata.org/wiki/Q1637030","display_name":"Food science","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0012-365x(91)90137-q","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0012-365x(91)90137-q","pdf_url":null,"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":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W26956047","https://openalex.org/W1168996247","https://openalex.org/W1972891623","https://openalex.org/W1978440852","https://openalex.org/W1987819196","https://openalex.org/W1991897317","https://openalex.org/W2001485585","https://openalex.org/W2007042206","https://openalex.org/W2014997640","https://openalex.org/W2074440137","https://openalex.org/W2080872158","https://openalex.org/W2092142565","https://openalex.org/W2320377306","https://openalex.org/W2611298788","https://openalex.org/W6601132056"],"related_works":["https://openalex.org/W2044829724","https://openalex.org/W169006039","https://openalex.org/W1976778342","https://openalex.org/W2364512413","https://openalex.org/W2390590114","https://openalex.org/W2021821858","https://openalex.org/W4388328977","https://openalex.org/W2124016695","https://openalex.org/W2376096933","https://openalex.org/W2042914544"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-04-28T14:05:53.105641","created_date":"2025-10-10T00:00:00"}