{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T17:14:11Z","timestamp":1760202851015,"version":"3.41.0"},"reference-count":0,"publisher":"SAGE Publications","issue":"3-4","license":[{"start":{"date-parts":[[1996,1,1]],"date-time":"1996-01-01T00:00:00Z","timestamp":820454400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Fundamenta Informaticae"],"published-print":{"date-parts":[[1996,3]]},"abstract":"<jats:p> The purpose of the paper is to present the implications of a new definition of context-free languages. The main interests of this approach are first to allow full formal proofs and second to enlight the crucial role of rational closures. The proposed formalism is based on a theorem of Wechler. It is very near to the \u201cradical algebras\u201d of Conway. <\/jats:p>","DOI":"10.3233\/fi-1996-253401","type":"journal-article","created":{"date-parts":[[2019,12,3]],"date-time":"2019-12-03T01:46:04Z","timestamp":1575337564000},"page":"217-239","source":"Crossref","is-referenced-by-count":4,"title":["TOWARDS AN ALGEBRAIC THEORY OF CONTEXT-FREE LANGUAGES"],"prefix":"10.1177","volume":"25","author":[{"given":"J.","family":"Berstel","sequence":"first","affiliation":[{"name":"LITP, Institut Blaise Pascal, Universit\u00e9 Pierre et Marie Curie, 4, place Jussieu, F-75252 Paris Cedex 05, France"}]},{"given":"L.","family":"Boasson","sequence":"additional","affiliation":[{"name":"LITP, Universit\u00e9 Denis Diderot, 2, place Jussieu, F-75251 Paris Cedex 05, France"}]}],"member":"179","published-online":{"date-parts":[[1996,1,1]]},"container-title":["Fundamenta Informaticae"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.3233\/FI-1996-253401","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.3233\/FI-1996-253401","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,7,1]],"date-time":"2025-07-01T10:50:06Z","timestamp":1751367006000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.3233\/FI-1996-253401"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1996,1,1]]},"references-count":0,"journal-issue":{"issue":"3-4","published-print":{"date-parts":[[1996,3]]}},"alternative-id":["10.3233\/FI-1996-253401"],"URL":"https:\/\/doi.org\/10.3233\/fi-1996-253401","relation":{},"ISSN":["0169-2968","1875-8681"],"issn-type":[{"type":"print","value":"0169-2968"},{"type":"electronic","value":"1875-8681"}],"subject":[],"published":{"date-parts":[[1996,1,1]]}}}