Semenyshyna, I. V., & Teplinsky, Y. V. (2003). On the Cauchy Problem for Degenerate Difference Equations of the mth Order in a Banach Space. Ukrains’kyi Matematychnyi Zhurnal, 55(8), 1127-1137. https://umj.imath.kiev.ua/index.php/umj/article/view/3986