{"id":"https://openalex.org/W4234848152","doi":"https://doi.org/10.1023/a:1018068422276","title":null,"display_name":null,"publication_year":1996,"publication_date":"1996-01-01","ids":{"openalex":"https://openalex.org/W4234848152","doi":"https://doi.org/10.1023/a:1018068422276"},"language":"en","primary_location":{"is_oa":false,"landing_page_url":"https://doi.org/10.1023/a:1018068422276","pdf_url":null,"source":{"id":"https://openalex.org/S81616010","display_name":"Designs Codes and Cryptography","issn_l":"0925-1022","issn":["0925-1022","1573-7586"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false},"type":"article","type_crossref":"journal-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/A5059306016","display_name":"Alphonse Baartmans","orcid":null},"institutions":[{"id":"https://openalex.org/I11957088","display_name":"Michigan Technological University","ror":"https://ror.org/0036rpn28","country_code":"US","type":"education","lineage":["https://openalex.org/I11957088"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Alphonse Baartmans","raw_affiliation_strings":["Department of Mathematical Sciences, MichiganTechnological University, Houghton, Michigan, 49931, U.S.A"],"affiliations":[{"raw_affiliation_string":"Department of Mathematical Sciences, MichiganTechnological University, Houghton, Michigan, 49931, U.S.A","institution_ids":["https://openalex.org/I11957088"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076168644","display_name":"Ivan Landjev","orcid":"https://orcid.org/0000-0001-5147-5186"},"institutions":[{"id":"https://openalex.org/I11957088","display_name":"Michigan Technological University","ror":"https://ror.org/0036rpn28","country_code":"US","type":"education","lineage":["https://openalex.org/I11957088"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ivan Landjev","raw_affiliation_strings":["Department of Mathematical Sciences, MichiganTechnological University, Houghton, Michigan, 49931, U.S.A"],"affiliations":[{"raw_affiliation_string":"Department of Mathematical Sciences, MichiganTechnological University, Houghton, Michigan, 49931, U.S.A","institution_ids":["https://openalex.org/I11957088"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5054244870","display_name":"Vladimir D. Tonchev","orcid":"https://orcid.org/0000-0003-1806-3571"},"institutions":[{"id":"https://openalex.org/I11957088","display_name":"Michigan Technological University","ror":"https://ror.org/0036rpn28","country_code":"US","type":"education","lineage":["https://openalex.org/I11957088"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Vladimir D. Tonchev","raw_affiliation_strings":["Department of Mathematical Sciences, MichiganTechnological University, Houghton, Michigan, 49931, U.S.A"],"affiliations":[{"raw_affiliation_string":"Department of Mathematical Sciences, MichiganTechnological University, Houghton, Michigan, 49931, U.S.A","institution_ids":["https://openalex.org/I11957088"]}]}],"institution_assertions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2290,"currency":"EUR","value_usd":2890,"provenance":"doaj"},"apc_paid":null,"fwci":null,"has_fulltext":true,"fulltext_origin":"ngrams","cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":{"min":0,"max":54},"biblio":{"volume":"8","issue":"1/2","first_page":"29","last_page":"43"},"is_retracted":false,"is_paratext":false,"primary_topic":null,"topics":[],"keywords":[{"id":"https://openalex.org/keywords/steiner-system","display_name":"Steiner system","score":0.680855},{"id":"https://openalex.org/keywords/code","display_name":"Code (set theory)","score":0.6383951}],"concepts":[{"id":"https://openalex.org/C175695255","wikidata":"https://www.wikidata.org/wiki/Q4420916","display_name":"Steiner system","level":2,"score":0.680855},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.65410715},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.6383951},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.6352364},{"id":"https://openalex.org/C2780069185","wikidata":"https://www.wikidata.org/wiki/Q7977945","display_name":"Equivalence (formal languages)","level":2,"score":0.59884727},{"id":"https://openalex.org/C135598885","wikidata":"https://www.wikidata.org/wiki/Q1366302","display_name":"Row","level":2,"score":0.45322403},{"id":"https://openalex.org/C48372109","wikidata":"https://www.wikidata.org/wiki/Q3913","display_name":"Binary number","level":2,"score":0.45292202},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.39906195},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.18633941},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.16045621},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.0},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"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":[{"is_oa":false,"landing_page_url":"https://doi.org/10.1023/a:1018068422276","pdf_url":null,"source":{"id":"https://openalex.org/S81616010","display_name":"Designs Codes and Cryptography","issn_l":"0925-1022","issn":["0925-1022","1573-7586"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false}],"best_oa_location":null,"sustainable_development_goals":[],"grants":[],"datasets":[],"versions":[],"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4297833501","https://openalex.org/W4281971614","https://openalex.org/W3175260668","https://openalex.org/W3122721839","https://openalex.org/W2982353255","https://openalex.org/W2953259538","https://openalex.org/W2390933768","https://openalex.org/W2292909562","https://openalex.org/W2184455175","https://openalex.org/W108640429"],"abstract_inverted_index":null,"cited_by_api_url":"https://api.openalex.org/works?filter=cites:W4234848152","counts_by_year":[],"updated_date":"2024-12-10T15:58:36.329073","created_date":"2022-05-12"}