Kelley, Walter G. Difference equations: an introduction with applications/ Walter G. Kelley, Allan C. Peterson. - Boston: Academic Press, c1991. - xi, 455 p.: ill.; 25 cm. Includes bibliographical references (p. 433-451) and index. ISBN: 0124033253 (alk. paper) LCCN: 90014437 Nat. Bib. No.: GB91-58177 Subjects--Topical Terms: Equations aux différences.Difference equations. Dewey Class. No.: 515.625 / K29d