Buldygin, V.V., Klesov, O.I. and Steinebach, J.G. (2010) “On the convergence of positive increasing functions to infinity”, Ukrains’kyi Matematychnyi Zhurnal, 62(10), pp. 1299–1308. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2956 (Accessed: 5 December 2025).