Brown, James Ward . Fourier series and boundary value problems / by James Ward Brown and Ruel V. Churchill. - 7th ed / - New Delhi : Tata McGraw-Hill Publishing Company Ltd. , 2008 - xvi, 366p ; ISBN: 0-07-063660-5 Subjects--Topical Terms: Functions, Orthogonal Dewey Class. No.: B33 / P8;2