Samoilenko, A.M. and Stepanenko, N.V. (2002) “On Some Properties of the Behavior of Linear Extensions of Dynamical Systems on a Torus under Perturbation of Phase Variables”, Ukrains’kyi Matematychnyi Zhurnal, 54(3), pp. 408–412. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4077 (Accessed: 6 December 2025).