VyatchaninovO. V. and GorodniiM. F. (2009) “On the boundedness of one recurrent sequence in a banach space”, Ukrains’kyi Matematychnyi Zhurnal, 61(9), pp. 1293-1296. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3100 (Accessed: 2December2024).