@book{4825,
	author = {Hildebrand, Francis Begnaud.},
	title = {Methods of applied mathematics /},
	publisher = {Prentice-Hall,},
	year = {1952.},
	series = {Prentice-Hall mathematics series},
	address = {Englewood Cliffs, N.J. :},
	note = {Includes index.}
}