DobrynskiiV. A. “On the Structure of the Set of Nonwandering Points of a Pair of Coupled Quadratic Maps”. Ukrains’kyi Matematychnyi Zhurnal 51, no. 12 (December 25, 1999): 1704–1709. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4773.