Korenovskyi, A. O., and R. V. Shanin. “On a Property of the Arithmetic Means of Monotonous Sequences”. Ukrains’kyi Matematychnyi Zhurnal 74, no. 4 (June 12, 2022): 516–524. Accessed December 8, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/7151.