Agarwal, Ravi P. Difference equations and inequalities : Theory, methods, and applications Ravi P. Agarwal - New York : M. Dekker, c1992. - xiii, 777 p. 24 cm - Pure and applied mathematics ; 155 . Bibliografie p. 756Index p. 760 eng ISBN: 0-8247-8676-9 LCCN: 91042577 Subjects--Topical Terms: Difference equationsInequalities (Mathematics) LC Class. No.: QA431 Dewey Class. No.: 515.625