Gorodnii, M.F. and Lagoda, O.A. (2001) “Bounded Solutions for Some Classes of Difference Equations with Operator Coefficients”, Ukrains’kyi Matematychnyi Zhurnal, 53(11), pp. 1495–1500. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4369 (Accessed: 6 December 2025).