Sartabanov Zhaishylyk Almaganbetovich, Omarova Bibigul Zharbolovna, Kerimbekov Akylbek. RESEARCH OF MULTIPERIODIC SOLUTIONS OF PERTURBED LINEAR AUTONOMOUS SYSTEMS WITH DIFFERENTIATION OPERATOR ON THE VECTOR FIELD. PMS [Интернет]. 4 февраль 2019 г. [цитируется по 23 февраль 2025 г.];(1):5-13. доступно на: http://189185.vm7pq.group/physics-mathematics/article/view/1155