GorodniiM. F. and RomanenkoV. N. (2000) “Approximation of a bounded solution of one difference equation with unbounded operator coefficient by solutions of the corresponding boundary-value problems”, Ukrains’kyi Matematychnyi Zhurnal, 52(4), pp. 548-552. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4445 (Accessed: 1September2024).