{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,3,31]],"date-time":"2022-03-31T17:56:29Z","timestamp":1648749389122},"reference-count":3,"publisher":"Elsevier BV","issue":"2","license":[{"start":{"date-parts":[[1992,1,1]],"date-time":"1992-01-01T00:00:00Z","timestamp":694224000000},"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":7868,"URL":"https:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Theoretical Computer Science"],"published-print":{"date-parts":[[1992,1]]},"DOI":"10.1016\/0304-3975(92)90313-5","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T00:17:21Z","timestamp":1027642641000},"page":"227-248","source":"Crossref","is-referenced-by-count":13,"title":["Angular 2-structures"],"prefix":"10.1016","volume":"92","author":[{"given":"A.","family":"Ehrenfeucht","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G.","family":"Rozenberg","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/0304-3975(92)90313-5_BIB1","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1016\/0304-3975(90)90129-6","article-title":"Theory of 2-structures, Part I: Clans, morphisms, and basic subclasses","volume":"70","author":"Ehrenfeucht","year":"1990","journal-title":"Theoret. Comput. Sci."},{"key":"10.1016\/0304-3975(92)90313-5_BIB2","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1016\/0304-3975(90)90130-A","article-title":"Theory of 2-structures, Part II: Representation through labeled tree families","volume":"70","author":"Ehrenfeucht","year":"1990","journal-title":"Theoret. Comput. Sci."},{"key":"10.1016\/0304-3975(92)90313-5_BIB3","doi-asserted-by":"crossref","first-page":"343","DOI":"10.1016\/0304-3975(90)90131-Z","article-title":"Primitivity is hereditary for 2-structures","volume":"70","author":"Ehrenfeucht","year":"1990","journal-title":"Theoret. Comput. Sci."}],"container-title":["Theoretical Computer Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0304397592903135?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0304397592903135?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,12]],"date-time":"2019-04-12T09:57:11Z","timestamp":1555063031000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0304397592903135"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1992,1]]},"references-count":3,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1992,1]]}},"alternative-id":["0304397592903135"],"URL":"https:\/\/doi.org\/10.1016\/0304-3975(92)90313-5","relation":{},"ISSN":["0304-3975"],"issn-type":[{"value":"0304-3975","type":"print"}],"subject":[],"published":{"date-parts":[[1992,1]]}}}