Boyce, William E. Elementary differential equations and boundary value problems / William E. Boyce, Richard C. DiPrima. - 6th ed. - New York : J. Wiley, c1997. - xvi, 749 p. : col. ill. ; 25 cm. Includes bibliographical references and index. ISBN: 0471089559 (cloth : alk. paper) LCCN: 96019864 Subjects--Topical Terms: Differential equations.Boundary value problems. LC Class. No.: QA371 / .B773 1997 Dewey Class. No.: 515.35/BOY