1. Propagation of LF electromagnetic waves in the Earth-ionosphere waveguide;Al'pert,1967
2. ‘Omega’ A-station amplitude variations during the July 22, 1990 solar eclipse;Aristov;Res. Lett. Atm. Electricity,1992
3. VLF Radio Wave Fluctuations In the Earth-Ionosphere Waveguide;Bezrodny,1984
4. Schumann Resonances in the Earth-Ionosphere Cavity;Bliokh,1980