@book{1892,
	author = {Gopal, M.},
	title = {Modern control system theory /},
	publisher = {John Wiley and Sons Ltd,},
	year = {1994.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/8122405037/chopaconline-20}
}