@book{13508,
	author = {Aho, Alfred V. and Ullman, Jeffrey D.,},
	title = {Principles of compiler design /},
	publisher = {Narosa Publishing ;},
	year = {1989 [22 reprint 1999].},
	series = {Addison-Wesley series in computer science and information processing.},
	address = {New Dellhi :}
}