MartуnуukАА, KоzubоvskауaIG. On sufficient conditions of stability for systems with constantly acting disturbances. Ukr. Mat. Zhurn. [Internet]. 1971Apr.26 [cited 2024Oct.6];23(3):405-10. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/8571