1. A. V. Gurevich and E. E. Tsedilina, Geomagn. Aeron.,13, 283 (1973).
2. A. V. Gurevich and E. E. Tsedilina, in: Propagation of Decameter Waves [in Russian], IZMIRAN, Moscow (1975), p. 5.
3. E. E. Tsedilina, Dissertation, IZMIRAN, Moscow (1976).
4. A. V. Gurevich and E. E. Tsedilina, in: Extra-Long Range Propagation of Radio Waves and Ionospheric Models [in Russian], IZMIRAN, Moscow (1977), p. 104.
5. A. V. Gurevich and E. E. Tsedilina, Extra-Long Range Propagation of Short Radio Waves [in Russian], Nauka, Moscow (1979).