1.1 Formal Definition of Finite Automaton Regular Operation Union Concaten
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Network Working Group H. Alvestrand Request for Comments: 3066 Cisco Systems BCP: 47 January 2001
Network Working Group P. Hoffman Request for Comments: 2987 Internet Mail Consortium Category: Sta
Network Working Group H. Alvestrand Request for Comments: 2277 UNINETT BCP: 18 January 1998 Catego
Network Working Group H. Alvestrand Request for Comments: 1766 UNINETT Category: Standards Track M
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