Ivanov, A. F.; Maistrenko, Y. L.; Романенко, О. To the Bright Memory of Oleksandr Mykolayovych Sharkovsky. Sixty Years of the Famous Sharkovsky’s Theorem. Ukr. Mat. Zhurn. 2024, 76 (1), 3-4. https://doi.org/10.3842/umzh.v76i1.8138.