Sharma, M.M.. Linear Difference Equations / Textual Documents M.M.Sharma,R.K.Gupta & D.C.Agarwal. - 3rd ed. / - Meerut : Krishna Prakashan Mandir , Nd. - vii,136p. : ill ; 22cm . Subjects--Index Terms: Difference Equations G-Mathematics Dewey Class. No.: 515.35