Mikhlin, S.G. Approximat methods for solution of differential and integral equations by S.G. Mikhlin, K.L. Smolitskiy - New York American Elsevier Publishing Company 1967 - xi, 308p. - Modern Analytic and Computational Methods in Sci. & Maths . LCCN: 67-22421 Dewey Class. No.: 515.38 / N67