{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T16:19:49Z","timestamp":1759335589768},"reference-count":9,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[1980,2,1]],"date-time":"1980-02-01T00:00:00Z","timestamp":318211200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2013,7,17]],"date-time":"2013-07-17T00:00:00Z","timestamp":1374019200000},"content-version":"vor","delay-in-days":12220,"URL":"https:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Combinatorial Theory, Series B"],"published-print":{"date-parts":[[1980,2]]},"DOI":"10.1016\/0095-8956(80)90051-9","type":"journal-article","created":{"date-parts":[[2005,2,9]],"date-time":"2005-02-09T09:37:08Z","timestamp":1107941828000},"page":"1-9","source":"Crossref","is-referenced-by-count":25,"title":["Some counterexamples associated with the three-color problem"],"prefix":"10.1016","volume":"28","author":[{"given":"V.A","family":"Aksionov","sequence":"first","affiliation":[]},{"given":"L.S","family":"Mel'nikov","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/0095-8956(80)90051-9_BIB1","first-page":"3","article-title":"Concerning the extension of the 3-coloring of planar graphs","volume":"26","author":"Aksionov","year":"1974","journal-title":"Diskret. Aanaliz."},{"key":"10.1016\/0095-8956(80)90051-9_BIB2","first-page":"109","article-title":"Ein Dreifarbensatz f\u00fcr dreikreisfreie Netze auf der Kugel","volume":"8","author":"Gr\u00f6tzsch","year":"1958","journal-title":"Wiss. Z. Martin-Luther-Univ. Halle-Wittenberg Math.-Natur. Reihe"},{"key":"10.1016\/0095-8956(80)90051-9_BIB3","doi-asserted-by":"crossref","first-page":"303","DOI":"10.1307\/mmj\/1028998916","article-title":"Gr\u00f6tzsch's theorem on 3-colorings","volume":"10","author":"Gr\u00fcnbaum","year":"1963","journal-title":"Michigan Math. J."},{"key":"10.1016\/0095-8956(80)90051-9_BIB4","author":"Harary","year":"1969"},{"key":"10.1016\/0095-8956(80)90051-9_BIB5","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1016\/S0021-9800(69)80054-2","article-title":"On a conjecture of B. Gr\u00fcnbaum","volume":"7","author":"Havel","year":"1969","journal-title":"J. Combinatorial Theory"},{"key":"10.1016\/0095-8956(80)90051-9_BIB6","first-page":"89","article-title":"O zbarvitelnosti rovinn\u00fdch graf\u016f t\u0159emi barvami","author":"Havel","year":"1970","journal-title":"Math. Geometrie Theorie Graf\u016f (Praha)"},{"key":"10.1016\/0095-8956(80)90051-9_BIB7","author":"Ore","year":"1967"},{"key":"10.1016\/0095-8956(80)90051-9_BIB8","series-title":"Einf\u00fchrung in die Theorie der endlichen Graphen","author":"Sachs","year":"1972"},{"key":"10.1016\/0095-8956(80)90051-9_BIB9","unstructured":"R. Steinberg, private communications from March 7, 1975, and December 10, 1975."}],"container-title":["Journal of Combinatorial Theory, Series B"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0095895680900519?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0095895680900519?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,1,29]],"date-time":"2019-01-29T11:24:43Z","timestamp":1548761083000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0095895680900519"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1980,2]]},"references-count":9,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1980,2]]}},"alternative-id":["0095895680900519"],"URL":"https:\/\/doi.org\/10.1016\/0095-8956(80)90051-9","relation":{},"ISSN":["0095-8956"],"issn-type":[{"value":"0095-8956","type":"print"}],"subject":[],"published":{"date-parts":[[1980,2]]}}}