@book{7810,
	author = {Webster, Arthur Gordon, and Plimpton, Samuel James,},
	title = {Partial differential equations of mathematical physics,},
	publisher = {G.E. Stechert & Co.;},
	year = {1927.},
	series = {B. G. Teubners sammlung von lehrbüchern auf dem gebiete der mathematischen wissenschaften ... bd. XLII},
	address = {New York,},
	note = {Printed in Germany.}
}