@book{12964,
	author = {Hopcroft, E.   John; Motwani, Rajeev; Ullman ,Jeffrey D.},
	title = {Introduction to Automata Theory, Languages and Computation},
	publisher = {Pearson Education},
	year = {,2007.},
	address = {New Delhi:},
	edition = {3rd},
	note = {Includes Index}
}