Teplins’kyi OY, Teplinsky YV. On the erugin and floquet-lyapunov theorems for countable systems of difference equations. Ukr. Mat. Zhurn. [Internet]. 1996Feb.25 [cited 2024Jul.27];48(2):278-84. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/5354