{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T10:42:08Z","timestamp":1775558528907,"version":"3.50.1"},"reference-count":10,"publisher":"Elsevier BV","issue":"2","license":[{"start":{"date-parts":[[1991,7,1]],"date-time":"1991-07-01T00:00:00Z","timestamp":678326400000},"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":8052,"URL":"https:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Discrete Applied Mathematics"],"published-print":{"date-parts":[[1991,7]]},"DOI":"10.1016\/0166-218x(91)90097-g","type":"journal-article","created":{"date-parts":[[2002,7,25]],"date-time":"2002-07-25T23:43:01Z","timestamp":1027640581000},"page":"141-153","source":"Crossref","is-referenced-by-count":2,"title":["On generalized zeta functions of formal languages and series"],"prefix":"10.1016","volume":"32","author":[{"given":"Juha","family":"Honkala","sequence":"first","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/0166-218X(91)90097-G_BIB1","series-title":"Rational Series and Their Languages","author":"Berstel","year":"1988"},{"key":"10.1016\/0166-218X(91)90097-G_BIB2","series-title":"Automata, Languages and Programming","first-page":"93","article-title":"Zeta functions of recognizable languages","author":"Berstel","year":"1988"},{"key":"10.1016\/0166-218X(91)90097-G_BIB3","doi-asserted-by":"crossref","first-page":"631","DOI":"10.2307\/2372974","article-title":"On the rationality of the zeta function of an algebraic variety","volume":"82","author":"Dwork","year":"1960","journal-title":"Amer. J. Math."},{"key":"10.1016\/0166-218X(91)90097-G_BIB4","doi-asserted-by":"crossref","first-page":"341","DOI":"10.1016\/0304-3975(89)90159-X","article-title":"A necessary condition for the rationality of the zeta function of a regular language","volume":"66","author":"Honkala","year":"1989","journal-title":"Theoret. Comput. Sci."},{"key":"10.1016\/0166-218X(91)90097-G_BIB5","series-title":"Languages and Computation","article-title":"Introduction to Automata Theory","author":"Hopcroft","year":"1979"},{"key":"10.1016\/0166-218X(91)90097-G_BIB6","series-title":"Semirings, Automata, Languages","author":"Kuich","year":"1986"},{"key":"10.1016\/0166-218X(91)90097-G_BIB7","series-title":"Algebra","author":"Lang","year":"1984"},{"key":"10.1016\/0166-218X(91)90097-G_BIB8","series-title":"Combinatorics on Words","author":"Lothaire","year":"1983"},{"key":"10.1016\/0166-218X(91)90097-G_BIB9","series-title":"Formal Languages","author":"Salomaa","year":"1973"},{"key":"10.1016\/0166-218X(91)90097-G_BIB10","series-title":"Automata-Theoretic Aspects of Formal Power Series","author":"Salomaa","year":"1978"}],"container-title":["Discrete Applied Mathematics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0166218X9190097G?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0166218X9190097G?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,4,13]],"date-time":"2019-04-13T02:20:27Z","timestamp":1555122027000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0166218X9190097G"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1991,7]]},"references-count":10,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1991,7]]}},"alternative-id":["0166218X9190097G"],"URL":"https:\/\/doi.org\/10.1016\/0166-218x(91)90097-g","relation":{},"ISSN":["0166-218X"],"issn-type":[{"value":"0166-218X","type":"print"}],"subject":[],"published":{"date-parts":[[1991,7]]}}}