Fourier series and boundary value problems / Ruel V. Churchill, James Ward Brown. Churchill, Ruel V. (Ruel Vance), 1899-1987. Brown, James Ward, joint author. Fourier series. Functions, Orthogonal. Boundary value problems. QA404 .C6 1978 515.2432 CHF Includes index. Bibliography: p. 263-265. New York : McGraw-Hill, c1978. c1978. 1978 Text viii, 271 p. ; eng