Sartabanov Zhaishylyk Almaganbetovich, Omarova Bibigul Zharbolovna, и Kerimbekov Akylbek. «RESEARCH OF MULTIPERIODIC SOLUTIONS OF PERTURBED LINEAR AUTONOMOUS SYSTEMS WITH DIFFERENTIATION OPERATOR ON THE VECTOR FIELD». Academic Scientific Journal of Computer Science, no. 1 (февраль 4, 2019): 5–13. просмотрено декабрь 15, 2025. http://89.250.84.46/physics-mathematics/article/view/1155.