Imanbaev Nurlan Sairamovich (2019) «ON BASIS PROPERTY OF SYSTEMS ROOT VECTORS OF A LOADED MULTIPLE DIFFERENTIATION OPERATOR», Academic Scientific Journal of Computer Science, (1), сс. 32–37. доступно на: https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1158 (просмотрено: 8 декабрь 2025).