Ali, N. A., and S. V. Yanchuk. “Conditions for Exponential Stability and Dichotomy of Pulse Linear Extensions of Dynamical Systems on a Torus”. Ukrains’kyi Matematychnyi Zhurnal 50, no. 3 (March 25, 1998): 451–453. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/4948.