{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,3,31]],"date-time":"2022-03-31T17:42:14Z","timestamp":1648748534068},"reference-count":9,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[1979,1,1]],"date-time":"1979-01-01T00:00:00Z","timestamp":283996800000},"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":[[1979,1]]},"DOI":"10.1016\/0020-0190(79)90093-0","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T04:11:21Z","timestamp":1027656681000},"page":"50-53","source":"Crossref","is-referenced-by-count":3,"title":["Three efficient algorithms for counting problems"],"prefix":"10.1016","volume":"8","author":[{"given":"Alberto","family":"Bertoni","sequence":"first","affiliation":[]},{"given":"Giancarlo","family":"Mauri","sequence":"additional","affiliation":[]},{"given":"Mauro","family":"Torelli","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/0020-0190(79)90093-0_BIB1","series-title":"The Design and Analysis of Computer Algorithms","author":"Aho","year":"1974"},{"key":"10.1016\/0020-0190(79)90093-0_BIB2","series-title":"Proc. Symp. MFCS 77","article-title":"An algebraic approach to problem solution and problem semantics","volume":"53","author":"Bertoni","year":"1977"},{"key":"10.1016\/0020-0190(79)90093-0_BIB3","series-title":"Computer, Programming and Formal Systems","article-title":"The algebraic theory of context-free languages","author":"Chomsky","year":"1963"},{"key":"10.1016\/0020-0190(79)90093-0_BIB4","doi-asserted-by":"crossref","DOI":"10.1016\/0020-0190(77)90020-5","article-title":"Automatic solution of a certain class of combinatorial problems","volume":"6","author":"Cohen","year":"1977","journal-title":"Inf. Proc. Letters"},{"key":"10.1016\/0020-0190(79)90093-0_BIB5","series-title":"Asymptotic Methods in Analysis","author":"De Bruijn","year":"1958"},{"issue":"1","key":"10.1016\/0020-0190(79)90093-0_BIB6","article-title":"A junction between computer science and category theory","volume":"I","author":"Goguen","year":"1973","journal-title":"IBM Research Report RC4526"},{"key":"10.1016\/0020-0190(79)90093-0_BIB7","doi-asserted-by":"crossref","DOI":"10.1145\/321992.321997","article-title":"Initial algebra semantics and continuous algebras","volume":"24","author":"Goguen","year":"1977","journal-title":"JACM"},{"key":"10.1016\/0020-0190(79)90093-0_BIB8","volume":"Vol. 2","author":"Knuth","year":"1969"},{"key":"10.1016\/0020-0190(79)90093-0_BIB9","series-title":"Categories for the Working Mathematician","author":"MacLane","year":"1971"}],"container-title":["Information Processing Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0020019079900930?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0020019079900930?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,12]],"date-time":"2019-04-12T16:28:07Z","timestamp":1555086487000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0020019079900930"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1979,1]]},"references-count":9,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1979,1]]}},"alternative-id":["0020019079900930"],"URL":"https:\/\/doi.org\/10.1016\/0020-0190(79)90093-0","relation":{},"ISSN":["0020-0190"],"issn-type":[{"value":"0020-0190","type":"print"}],"subject":[],"published":{"date-parts":[[1979,1]]}}}