@book{34203,
	author = {"Krithivasan, Kamala"},
	title = {"Theory of Automata, Formal Languages and Computation:"},
	publisher = {Indian Insitiute of Technology},
	address = {Madras},
	url = {"http://video.snu.edu.in/index.php?id=7499&cat=Computer Science and  Engineering&course=Theory of Automata, Formal Languages and Computation&url=Phase2_Video/106106049/mod01lec04.mp4"}
}