@book{57697,
	author = {Aho A. V., and Lam M. S.},
	title = {Compilers principles,techniques and tools},
	publisher = {Dorling Kindersley (India) Pvt.Ltd. Licensees of Pearson Education},
	year = {(2007 c) 2012},
	address = {New Delhi},
	edition = {2nd  ed.}
}