Forma normal de Chomsky (Catalan Wikipedia)

Analysis of information sources in references of the Wikipedia article "Forma normal de Chomsky" in Catalan language version.

Last modified: 21:53:07, 7 November 2025 (UTC)

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acm.org (Global: 1,200^th place; Catalan: 882^nd place)

doi.acm.org

Knuth, Donald E. «Backus Normal Form vs. Backus Naur Form». Commun. ACM, 7, 12, 12-1964, p. 735–736. DOI: 10.1145/355588.365140. ISSN: 0001-0782.

doi.org (Global: 2^nd place; Catalan: 4^th place)

dx.doi.org

Chomsky, Noam «On certain formal properties of grammars». Information and Control, 2, 2, p. 137–167. DOI: 10.1016/s0019-9958(59)90362-6.
Knuth, Donald E. «Backus Normal Form vs. Backus Naur Form». Commun. ACM, 7, 12, 12-1964, p. 735–736. DOI: 10.1145/355588.365140. ISSN: 0001-0782.

doi.org

Chomsky, Noam «On certain formal properties of grammars». Information and Control, 2, 2, p. 137–167. DOI: 10.1016/s0019-9958(59)90362-6.

worldcat.org (Global: 4^th place; Catalan: 6^th place)

1939-, Hopcroft, John E.,. Introduction to automata theory, languages, and computation. Reading, Mass.: Addison-Wesley, 1979. ISBN 020102988X.
Michael., Sipser,. Introduction to the theory of computation. 3a edició. Boston, MA: Cengage Learning, 2013. ISBN 9781133187790.
Knuth, Donald E. «Backus Normal Form vs. Backus Naur Form». Commun. ACM, 7, 12, 12-1964, p. 735–736. DOI: 10.1145/355588.365140. ISSN: 0001-0782.