@book{71696,
	author = {Tikhonov, A. N. and Samarskii, A. A.},
	title = {Equations of mathematical physics /},
	publisher = {Pergamon Press; },
	year = {c1963.},
	series = {International series of monographs on pure and applied mathematics,},
	address = {Oxford ;},
	note = {Includes index. }
}