@book{180275,
	author = {Grewal, B. S. and Grewal, J. S.},
	title = {Higher engineering mathematics /},
	publisher = {Khanna},
	year = {2005.},
	address = {Oxford ;},
	edition = {39th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0833/2006929704-d.html}
}