TY - BOOK AU - Hopcroft, John E AU - Ullman, Jeffrey D TI - Introduction to automata theory languages and computation SN - 8185015961 U1 - 511.3 1 PY - 1979/// CY - New Delhi PB - Narosa Publishing House KW - Preliminaries KW - Finite Automata and Regular Expressions KW - Properties of Regular Sets KW - Context-Free Grammars KW - Pushdown Automata KW - Turing Machines KW - The Chomsky Hierarchy KW - Computational Complexity Theory KW - Intractable Problems ER -