I. Y. Vlasenko, “An Example of Neutrally Nonwandering Points for the Inner Mappings that are Not Neutrally Recurrent”, Ukr. Mat. Zhurn., vol. 67, no. 8, pp. 1030–1033, Aug. 2015, Accessed: Apr. 07, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2043