@book{2963,
	author = {Boyce, William E. and DiPrima, Richard C.},
	title = {Elementary differential equations /},
	publisher = {Wiley,},
	year = {c2001.},
	address = {New York :},
	edition = {7th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/bios/wiley045/00023754.html}
}