{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,14]],"date-time":"2025-10-14T11:05:18Z","timestamp":1760439918240},"reference-count":7,"publisher":"Elsevier BV","issue":"1-3","license":[{"start":{"date-parts":[[1998,6,1]],"date-time":"1998-06-01T00:00:00Z","timestamp":896659200000},"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":5525,"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":[[1998,6]]},"DOI":"10.1016\/s0012-365x(98)00052-1","type":"journal-article","created":{"date-parts":[[2003,5,19]],"date-time":"2003-05-19T16:52:26Z","timestamp":1053363146000},"page":"233-238","source":"Crossref","is-referenced-by-count":6,"title":["Structural characterization of projective flexibility"],"prefix":"10.1016","volume":"188","author":[{"given":"Beifang","family":"Chen","sequence":"first","affiliation":[]},{"given":"Serge","family":"Lawrencenko","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/S0012-365X(98)00052-1_BIB1","doi-asserted-by":"crossref","first-page":"222","DOI":"10.1016\/0095-8956(82)90041-7","article-title":"Generating the triangulations of the projective plane","volume":"33","author":"Barnette","year":"1982","journal-title":"J. Combin. Theory Ser. B"},{"key":"10.1016\/S0012-365X(98)00052-1_BIB2","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1007\/BF02764905","article-title":"All 2-manifolds have finitely many minimal triangulations","volume":"67","author":"Barnette","year":"1989","journal-title":"Israel J. Math."},{"key":"10.1016\/S0012-365X(98)00052-1_BIB3_1","first-page":"71","article-title":"On the number of triangular embeddings of a labeled graph in the projective plane","volume":"32","author":"Lawrencenko","year":"1989","journal-title":"Ukrain. Geom. Sb."},{"key":"10.1016\/S0012-365X(98)00052-1_BIB3_2","doi-asserted-by":"crossref","first-page":"741","DOI":"10.1007\/BF01097173","article-title":"On the number of triangular embeddings of a labeled graph in the projective plane","volume":"59","author":"Lawrencenko","year":"1992","journal-title":"J. Soviet Math."},{"key":"10.1016\/S0012-365X(98)00052-1_BIB4","doi-asserted-by":"crossref","first-page":"196","DOI":"10.1016\/0095-8956(92)90051-X","article-title":"The variety of triangular embeddings of a graph in the projective plane","volume":"54","author":"Lawrencenko","year":"1992","journal-title":"J. Combin. Theory Ser. B"},{"key":"10.1016\/S0012-365X(98)00052-1_BIB5","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/0095-8956(84)90024-8","article-title":"Uniquely and faithfully embeddable projective-planar triangulations","volume":"36","author":"Negami","year":"1984","journal-title":"J. Combin. Theory Ser. B"},{"key":"10.1016\/S0012-365X(98)00052-1_BIB6","doi-asserted-by":"crossref","first-page":"231","DOI":"10.2307\/2371125","article-title":"A set of topological invariants for graphs","volume":"55","author":"Whitney","year":"1933","journal-title":"Am. J. Math."}],"container-title":["Discrete Mathematics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0012365X98000521?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0012365X98000521?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,25]],"date-time":"2019-04-25T05:20:50Z","timestamp":1556169650000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0012365X98000521"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1998,6]]},"references-count":7,"journal-issue":{"issue":"1-3","published-print":{"date-parts":[[1998,6]]}},"alternative-id":["S0012365X98000521"],"URL":"https:\/\/doi.org\/10.1016\/s0012-365x(98)00052-1","relation":{},"ISSN":["0012-365X"],"issn-type":[{"value":"0012-365X","type":"print"}],"subject":[],"published":{"date-parts":[[1998,6]]}}}