Imanbaev, N. (2020) «ON BASIS PROPERTY OF SYSTEMS ROOT VECTORS OF A LOADED MULTIPLE DIFFERENTIATION OPERATOR», Physico-mathematical series, (1), сс. 32–37. доступно на: http://550300.0ncwlf7ax.asia/physics-mathematics/article/view/389 (просмотрено: 4 декабрь 2024).