{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,6]],"date-time":"2026-04-06T11:21:01Z","timestamp":1775474461624,"version":"3.50.1"},"reference-count":7,"publisher":"Springer Science and Business Media LLC","issue":"3","license":[{"start":{"date-parts":[[1972,9,1]],"date-time":"1972-09-01T00:00:00Z","timestamp":84153600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Math. Systems Theory"],"published-print":{"date-parts":[[1972,9]]},"DOI":"10.1007\/bf01740724","type":"journal-article","created":{"date-parts":[[2005,6,13]],"date-time":"2005-06-13T21:31:36Z","timestamp":1118698296000},"page":"324-333","source":"Crossref","is-referenced-by-count":6,"title":["Context-sensitive immediate constituent analysis: Context-free languages revisited"],"prefix":"10.1007","volume":"6","author":[{"suffix":"Jr.","given":"P. Stanley","family":"Peters","sequence":"first","affiliation":[]},{"given":"Robert W.","family":"Ritchie","sequence":"additional","affiliation":[]}],"member":"297","reference":[{"key":"BF01740724_CR1","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1016\/S0019-9958(59)90362-6","volume":"2","author":"Noam Chomsky","year":"1959","unstructured":"Noam Chomsky, On certain formal properties of grammars,Information and Control 2 (1959), 137\u2013167.","journal-title":"Information and Control"},{"key":"BF01740724_CR2","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1109\/TIT.1956.1056813","volume":"2","author":"Noam Chomsky","year":"1956","unstructured":"Noam Chomsky, Three models for the description of language,IRE Trans. Information Theory 2 (1956), 113\u2013124.","journal-title":"IRE Trans. Information Theory"},{"key":"BF01740724_CR3","volume-title":"Introduction to Switching and Automata Theory","author":"Michael A. Harrison","year":"1965","unstructured":"Michael A. Harrison,Introduction to Switching and Automata Theory, McGraw-Hill, New York, 1965."},{"key":"BF01740724_CR4","first-page":"55","volume":"4","author":"James D. McCawley","year":"1968","unstructured":"James D. McCawley, Concerning the base component of a transformational grammar,Foundations of Language 4 (1968), 55\u201381.","journal-title":"Foundations of Language"},{"key":"BF01740724_CR5","unstructured":"P. Stanley Peters, Jr., andR. W. Ritchie, On the generative power of transformational grammars,Information Sci., to appear."},{"key":"BF01740724_CR6","doi-asserted-by":"crossref","unstructured":"W. C. Rounds, Tree-oriented proofs of some theorems on context-free and indexed languages,Second ACM Symposium on Theory of Computing, May 1970, pp. 109\u2013116.","DOI":"10.1145\/800161.805156"},{"key":"BF01740724_CR7","unstructured":"J. W. Thatcher, There's a lot more to finite automata theory than you would have thought,Fourth Princeton Conference on Information Sciences and Systems, April 1970, pp. 263\u2013276."}],"container-title":["Mathematical Systems Theory"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/BF01740724.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/article\/10.1007\/BF01740724\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/BF01740724","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,9]],"date-time":"2019-05-09T10:58:09Z","timestamp":1557399489000},"score":1,"resource":{"primary":{"URL":"http:\/\/link.springer.com\/10.1007\/BF01740724"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1972,9]]},"references-count":7,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1972,9]]}},"alternative-id":["BF01740724"],"URL":"https:\/\/doi.org\/10.1007\/bf01740724","relation":{},"ISSN":["0025-5661","1433-0490"],"issn-type":[{"value":"0025-5661","type":"print"},{"value":"1433-0490","type":"electronic"}],"subject":[],"published":{"date-parts":[[1972,9]]}}}