{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,5]],"date-time":"2022-04-05T08:22:37Z","timestamp":1649146957260},"reference-count":4,"publisher":"Elsevier BV","issue":"5","license":[{"start":{"date-parts":[[1995,12,1]],"date-time":"1995-12-01T00:00:00Z","timestamp":817776000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Information Processing Letters"],"published-print":{"date-parts":[[1995,12]]},"DOI":"10.1016\/0020-0190(95)00168-2","type":"journal-article","created":{"date-parts":[[2003,4,24]],"date-time":"2003-04-24T21:23:41Z","timestamp":1051219421000},"page":"237-243","source":"Crossref","is-referenced-by-count":3,"title":["A note on fine covers and iterable factors of VAS languages"],"prefix":"10.1016","volume":"56","author":[{"given":"Yen","family":"Hsu-Chun","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/0020-0190(95)00168-2_BIB1","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/S0022-0000(69)80011-5","article-title":"Parallel program schemata","volume":"3","author":"Karp","year":"1969","journal-title":"J. Comput. System Sci."},{"key":"10.1016\/0020-0190(95)00168-2_BIB2","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1016\/0304-3975(92)90071-M","article-title":"Fine covers of a VAS language","volume":"95","author":"Schwer","year":"1992","journal-title":"Theoret. Comput. Sci."},{"key":"10.1016\/0020-0190(95)00168-2_BIB3","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1016\/0304-3975(92)90002-W","article-title":"The context-freeness of the languages associated with vector addition systems is decidable","volume":"98","author":"Schwer","year":"1992","journal-title":"Theoret. Comput. Sci."},{"key":"10.1016\/0020-0190(95)00168-2_BIB4","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1016\/0890-5401(92)90059-O","article-title":"A unified approach for deciding the existence of certain Petri net paths","volume":"96","author":"Yen","year":"1992","journal-title":"Inform. and Comput."}],"container-title":["Information Processing Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0020019095001682?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0020019095001682?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,14]],"date-time":"2019-04-14T22:59:08Z","timestamp":1555282748000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0020019095001682"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1995,12]]},"references-count":4,"journal-issue":{"issue":"5","published-print":{"date-parts":[[1995,12]]}},"alternative-id":["0020019095001682"],"URL":"https:\/\/doi.org\/10.1016\/0020-0190(95)00168-2","relation":{},"ISSN":["0020-0190"],"issn-type":[{"value":"0020-0190","type":"print"}],"subject":[],"published":{"date-parts":[[1995,12]]}}}