Vlasenko, I. Y. “An Example of Neutrally Nonwandering Points for the Inner Mappings That Are Not Neutrally Recurrent”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 67, no. 8, Aug. 2015, pp. 1030-3, https://umj.imath.kiev.ua/index.php/umj/article/view/2043.