Gordiyenko, G.I., A.F. Yakovets, A.F. Yakovets, и Yu.G. Litvinov. «LONG - TERM VARIATIONS IN THE F- AND D-REGIONS OF IONOSPHERE». Academic Scientific Journal of Computer Science, no. 3 (июнь 8, 2020): 209–216. просмотрено декабрь 7, 2025. https://journals.nauka-nanrk.kz/physics-mathematics/article/view/491.