Boyce, William E. Elementary differential equations and boundary value problems / William E. Boyce, Richard C. DiPrima. - 7th ed. - New York : Wiley, 2001. - xvi, 745 p. : ill. (some col.) ; 26 cm. Includes index ISBN: 0471319996 LCCN: 00023752 Subjects--Topical Terms: Differential equations.Boundary value problems. LC Class. No.: QA371 / .B63 2001 Dewey Class. No.: 515/.35