{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T05:34:44Z","timestamp":1772516084253,"version":"3.50.1"},"reference-count":5,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[1983,1,1]],"date-time":"1983-01-01T00:00:00Z","timestamp":410227200000},"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":11155,"URL":"https:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Discrete Mathematics"],"published-print":{"date-parts":[[1983]]},"DOI":"10.1016\/0012-365x(83)90017-1","type":"journal-article","created":{"date-parts":[[2003,2,4]],"date-time":"2003-02-04T20:48:55Z","timestamp":1044391735000},"page":"21-27","source":"Crossref","is-referenced-by-count":27,"title":["Une generalisation du theoreme de Richardson sur l'existence de noyaux dans les graphes orientes"],"prefix":"10.1016","volume":"43","author":[{"given":"Pierre","family":"Duchet","sequence":"first","affiliation":[]},{"given":"Henri","family":"Meyniel","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/0012-365X(83)90017-1_BIB1_1","series-title":"Graphes et Hypergraphes","author":"Berge","year":"1970"},{"key":"10.1016\/0012-365X(83)90017-1_BIB1_2","series-title":"Ed. Anglaise: Graphs and Hypergraphs","author":"Berge","year":"1973"},{"key":"10.1016\/0012-365X(83)90017-1_BIB2","series-title":"Combinatorics 79","first-page":"93","article-title":"Graphes nouyau-parfaits","volume":"9","author":"Duchet","year":"1980"},{"key":"10.1016\/0012-365X(83)90017-1_BIB3","series-title":"Combinatorics 79","first-page":"302","article-title":"Two problems in kernel theory","volume":"9","author":"Duchet","year":"1980"},{"key":"10.1016\/0012-365X(83)90017-1_BIB4","doi-asserted-by":"crossref","first-page":"573","DOI":"10.2307\/1969755","article-title":"Solutions of irreflexive relations","volume":"58","author":"Richardson","year":"1953","journal-title":"Annals of Math."}],"container-title":["Discrete Mathematics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0012365X83900171?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0012365X83900171?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,3,30]],"date-time":"2019-03-30T02:55:00Z","timestamp":1553914500000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0012365X83900171"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1983]]},"references-count":5,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1983]]}},"alternative-id":["0012365X83900171"],"URL":"https:\/\/doi.org\/10.1016\/0012-365x(83)90017-1","relation":{},"ISSN":["0012-365X"],"issn-type":[{"value":"0012-365X","type":"print"}],"subject":[],"published":{"date-parts":[[1983]]}}}