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: http://89.250.84.46/physics-mathematics/article/view/1158 (просмотрено: 15 декабрь 2025).