Pandey, Adesh Kumar, <br/><br/>
Introduction to automata theory and formal languages /  
Adesh Kumar Pandey. 
 - Sixth edition 
 - New Delhi :  S.K. Kataria & Sons,  2015 ; Reprint 2017, 2022 
 - 358 pages :  figures, tables ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Introduction to concept of automata -- Finite automata -- Automata with output -- Regular expression and languages -- Properties of regular languages -- Context-free grammars and languages -- Simplified context-free grammar and its normal form -- Pushdown automata -- Properties of context-free languages -- Turing machine -- Extension of turing machine -- Recursive function theory -- The chomsky hierarchy -- Tractable and intractable problems. 
<br/><br/><label>ISBN: </label>9788188458479 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Machine theory.<br/>Formal languages.<br/>Computational complexity.
<br/><br/><label>Dewey Class. No.: </label>511.35  / P192i