@book{1899,
	author = {Babu, Joesph Cyril. and Xavier, S. Eugene.},
	title = {Princples of control systems /},
	publisher = {S Chand & Co Ltd,},
	year = {2004.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/8121917786/chopaconline-20}
}