Slyusarchuk VV. Conditions for Instability of an Invariant Toroidal Manifold of a Discrete Dynamical System in a Banach Space. Ukr. Mat. Zhurn. [Internet]. 2001 Apr. 25 [cited 2025 Apr. 13];53(4):572-6. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4280