1.
Dvornyk AV, Tkachenko VI. Almost periodic solutions of systems with delay and nonfixed times of impulsive action. Ukr. Mat. Zhurn. [Internet]. 2016Nov.25 [cited 2022Sep.26];68(11):1450-66. Available from: http://umj.imath.kiev.ua/index.php/umj/article/view/1933