A. F. Ivanov, Y. L. Maistrenko, and О. Романенко, “To the bright memory of Oleksandr Mykolayovych Sharkovsky. Sixty years of the famous Sharkovsky’s theorem”, Ukr. Mat. Zhurn., vol. 76, no. 1, pp. 3–4, Feb. 2024, doi: 10.3842/umzh.v76i1.8138.