@book{2244,
	author = {Gopal, M.},
	title = {Control systems :},
	publisher = {Tata McGraw-Hill Publishing Company Ltd.,},
	year = {c2002 [reprinted 2005].},
	address = {New Delhi :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0668/2006041923-d.html}
}