GorodniiM. F. (2003) “$l_p$-Solutions of One Difference Equation in a Banach Space”, Ukrains’kyi Matematychnyi Zhurnal, 55(3), pp. 425-430. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3916 (Accessed: 1September2024).