“Parameters of Traveling Ionospheric Disturbances: Results from Spaced Oblique HF Sounding”. Visnyk of V.N. Karazin Kharkiv National University, series “Radio Physics and Electronics”, no. 37 (December 30, 2022): 47–59. Accessed October 25, 2026. https://periodicals.karazin.ua/radiophysics/article/view/21931.