Zill, Dennis G. A first course in differential equations with modeling applications / Dennis G. Zill, metric version prepared by Aly El-Iraki - 11th ed. - Delhi: Cengage, c2018. - Various pages: ill, table, figs.; 28 cm. English ISBN: 9789353502539 9353502535 LCCN: 2016936077 Subjects--Topical Terms: Differential equations Dewey Class. No.: 515.35/ZIF