@book{11111,
	author = {Courant, Richard, and Hilbert, David,},
	title = {Methods of mathematical Physics : },
	publisher = {Wiley Eastern,,},
	year = {c1962.},
	series = {Wiley classics library},
	address = {New Delhi :},
	note = {Translation of: Methoden der mathematischen Physik.},
	url = {http://www.loc.gov/catdir/toc/onix05/89112829.html}
}