{"id":"https://openalex.org/W1964770505","doi":"https://doi.org/10.1016/0166-218x(88)90003-0","title":"Alternating 6-cycles in perfect matchings of graphs representing condensed benzenoid hydrocarbons","display_name":"Alternating 6-cycles in perfect matchings of graphs representing condensed benzenoid hydrocarbons","publication_year":1988,"publication_date":"1988-03-01","ids":{"openalex":"https://openalex.org/W1964770505","doi":"https://doi.org/10.1016/0166-218x(88)90003-0","mag":"1964770505"},"language":"en","primary_location":{"id":"doi:10.1016/0166-218x(88)90003-0","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0166-218x(88)90003-0","pdf_url":null,"source":{"id":"https://openalex.org/S171741597","display_name":"Discrete Applied Mathematics","issn_l":"0166-218X","issn":["0166-218X","1872-6771"],"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 Applied 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/A5110334725","display_name":"Alexandr\u00f9 T. Balaban","orcid":null},"institutions":[{"id":"https://openalex.org/I141595442","display_name":"University of Bucharest","ror":"https://ror.org/02x2v6p15","country_code":"RO","type":"education","lineage":["https://openalex.org/I141595442"]}],"countries":["RO"],"is_corresponding":true,"raw_author_name":"Alexandru T. Balaban","raw_affiliation_strings":["Department of Organic Chemistry, The Polytechnic Institute, Splaiul Independen\u0163ei, 313, R-76206 Bucharest, Romania","The Polytechnic Institute, Bucharest, Hungary#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Organic Chemistry, The Polytechnic Institute, Splaiul Independen\u0163ei, 313, R-76206 Bucharest, Romania","institution_ids":["https://openalex.org/I141595442"]},{"raw_affiliation_string":"The Polytechnic Institute, Bucharest, Hungary#TAB#","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5030614495","display_name":"Ioan Tomescu","orcid":"https://orcid.org/0000-0002-4747-9843"},"institutions":[{"id":"https://openalex.org/I141595442","display_name":"University of Bucharest","ror":"https://ror.org/02x2v6p15","country_code":"RO","type":"education","lineage":["https://openalex.org/I141595442"]}],"countries":["RO"],"is_corresponding":false,"raw_author_name":"Ioan Tomescu","raw_affiliation_strings":["Faculty of Mathematics, The University of Bucharest, Str. Academiei, 14, R-70109 Bucharest, Romania","The University of Bucharest, Bucharest, Hungary#TAB#"],"affiliations":[{"raw_affiliation_string":"Faculty of Mathematics, The University of Bucharest, Str. Academiei, 14, R-70109 Bucharest, Romania","institution_ids":["https://openalex.org/I141595442"]},{"raw_affiliation_string":"The University of Bucharest, Bucharest, Hungary#TAB#","institution_ids":["https://openalex.org/I141595442"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5110334725"],"corresponding_institution_ids":["https://openalex.org/I141595442"],"apc_list":{"value":2750,"currency":"USD","value_usd":2750},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":15,"citation_normalized_percentile":{"value":0.07993385,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"19","issue":"1-3","first_page":"5","last_page":"16"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11476","display_name":"Graph theory and applications","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2608","display_name":"Geometry and Topology"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11476","display_name":"Graph theory and applications","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2608","display_name":"Geometry and Topology"},"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/T11298","display_name":"Synthesis and Properties of Aromatic Compounds","score":0.9969000220298767,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12056","display_name":"Markov Chains and Monte Carlo Methods","score":0.9858999848365784,"subfield":{"id":"https://openalex.org/subfields/2613","display_name":"Statistics and Probability"},"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":0.7653067111968994},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.729154109954834},{"id":"https://openalex.org/keywords/algebraic-number","display_name":"Algebraic number","score":0.6713169813156128},{"id":"https://openalex.org/keywords/matching","display_name":"Matching (statistics)","score":0.5314660668373108},{"id":"https://openalex.org/keywords/strong-perfect-graph-theorem","display_name":"Strong perfect graph theorem","score":0.5271125435829163},{"id":"https://openalex.org/keywords/rational-function","display_name":"Rational function","score":0.5244612693786621},{"id":"https://openalex.org/keywords/perfect-power","display_name":"Perfect power","score":0.42205190658569336},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3519703149795532},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.27692288160324097},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.15742188692092896},{"id":"https://openalex.org/keywords/chordal-graph","display_name":"Chordal graph","score":0.12011528015136719},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.08039283752441406}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7653067111968994},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.729154109954834},{"id":"https://openalex.org/C9376300","wikidata":"https://www.wikidata.org/wiki/Q168817","display_name":"Algebraic number","level":2,"score":0.6713169813156128},{"id":"https://openalex.org/C165064840","wikidata":"https://www.wikidata.org/wiki/Q1321061","display_name":"Matching (statistics)","level":2,"score":0.5314660668373108},{"id":"https://openalex.org/C51044901","wikidata":"https://www.wikidata.org/wiki/Q16680059","display_name":"Strong perfect graph theorem","level":5,"score":0.5271125435829163},{"id":"https://openalex.org/C75190567","wikidata":"https://www.wikidata.org/wiki/Q41237","display_name":"Rational function","level":2,"score":0.5244612693786621},{"id":"https://openalex.org/C93446932","wikidata":"https://www.wikidata.org/wiki/Q1972803","display_name":"Perfect power","level":2,"score":0.42205190658569336},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3519703149795532},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.27692288160324097},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.15742188692092896},{"id":"https://openalex.org/C160446614","wikidata":"https://www.wikidata.org/wiki/Q1322892","display_name":"Chordal graph","level":3,"score":0.12011528015136719},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.08039283752441406},{"id":"https://openalex.org/C102192266","wikidata":"https://www.wikidata.org/wiki/Q4545823","display_name":"1-planar graph","level":4,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0166-218x(88)90003-0","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0166-218x(88)90003-0","pdf_url":null,"source":{"id":"https://openalex.org/S171741597","display_name":"Discrete Applied Mathematics","issn_l":"0166-218X","issn":["0166-218X","1872-6771"],"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 Applied 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":17,"referenced_works":["https://openalex.org/W633359816","https://openalex.org/W1647376095","https://openalex.org/W2005640439","https://openalex.org/W2010621898","https://openalex.org/W2030744827","https://openalex.org/W2053779020","https://openalex.org/W2055142854","https://openalex.org/W2063314599","https://openalex.org/W2084632944","https://openalex.org/W2091350104","https://openalex.org/W2095223694","https://openalex.org/W2132193686","https://openalex.org/W2890747390","https://openalex.org/W3169901405","https://openalex.org/W4241971033","https://openalex.org/W4247781591","https://openalex.org/W6796666314"],"related_works":["https://openalex.org/W2132353434","https://openalex.org/W2953172415","https://openalex.org/W2105838663","https://openalex.org/W2109934391","https://openalex.org/W2370501612","https://openalex.org/W206883905","https://openalex.org/W4391068352","https://openalex.org/W3153161399","https://openalex.org/W2356906936","https://openalex.org/W3103428906"],"abstract_inverted_index":null,"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-03-10T14:07:55.174380","created_date":"2025-10-10T00:00:00"}