{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T18:32:02Z","timestamp":1772130722096,"version":"3.50.1"},"reference-count":4,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[1981,3,1]],"date-time":"1981-03-01T00:00:00Z","timestamp":352252800000},"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":["Journal of Algorithms"],"published-print":{"date-parts":[[1981,3]]},"DOI":"10.1016\/0196-6774(81)90005-5","type":"journal-article","created":{"date-parts":[[2005,2,10]],"date-time":"2005-02-10T03:44:36Z","timestamp":1108007076000},"page":"31-43","source":"Crossref","is-referenced-by-count":8,"title":["An algorithm to determine when certain sets have 0-density"],"prefix":"10.1016","volume":"2","author":[{"given":"David A","family":"Klarner","sequence":"first","affiliation":[]}],"member":"78","reference":[{"issue":"No. 2","key":"10.1016\/0196-6774(81)90005-5_BIB1","doi-asserted-by":"crossref","first-page":"445","DOI":"10.2140\/pjm.1974.53.445","article-title":"Arithmetic properties of certain recursively defined sets","volume":"53","author":"Klarner","year":"1974","journal-title":"Pacific J. Math."},{"key":"10.1016\/0196-6774(81)90005-5_BIB2","series-title":"Sets of integers closed under unary affine operations","author":"Klarner","year":"1978"},{"key":"10.1016\/0196-6774(81)90005-5_BIB3","series-title":"An algorithm to compute the relations in certain semigroups","author":"Klarner","year":"1978"},{"key":"10.1016\/0196-6774(81)90005-5_BIB4","first-page":"4","article-title":"Algebraic Numbers and Fourier Analysis","author":"Salem","year":"1963","journal-title":"Heath Mathematical Monographs"}],"container-title":["Journal of Algorithms"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0196677481900055?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0196677481900055?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,1,29]],"date-time":"2019-01-29T01:52:50Z","timestamp":1548726770000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0196677481900055"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1981,3]]},"references-count":4,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1981,3]]}},"alternative-id":["0196677481900055"],"URL":"https:\/\/doi.org\/10.1016\/0196-6774(81)90005-5","relation":{},"ISSN":["0196-6774"],"issn-type":[{"value":"0196-6774","type":"print"}],"subject":[],"published":{"date-parts":[[1981,3]]}}}