Boyce, William E. Elementary differential equations and boundary value problems / William E. Boyce and Richard C. Diprima. - 7th ed. - New York : Wiley, c2001. - xvi, 745 pages : illustrations ; 26 cm. Includes index. ISBN: 9812530061 Subjects--Topical Terms: Differential equations.Boundary value problems. Dewey Class. No.: 515.35 BOY