Sartabanov Zhaishylyk Almaganbetovich, Omarova Bibigul Zharbolovna и Kerimbekov Akylbek (2019) «RESEARCH OF MULTIPERIODIC SOLUTIONS OF PERTURBED LINEAR AUTONOMOUS SYSTEMS WITH DIFFERENTIATION OPERATOR ON THE VECTOR FIELD», Academic Scientific Journal of Computer Science, (1), сс. 5–13. доступно на: http://89.250.84.46/physics-mathematics/article/view/1155 (просмотрено: 15 декабрь 2025).