1. S. A. Fedotov, in Seismic Zoning of the Soviet Union (Nauka, Moscow, 1968), pp. 121–150 [in Russian].
2. M. A. Sadovskii and V. F. Pisarenko, Dokl. Akad. Nauk 271(2), 330–333 (1983).
3. M. A. Sadovskii, V. F. Pisarenko, and V. V. Shteinberg, Dokl. Akad. Nauk 271(3), 598–602 (1983).
4. M. A. Sadovskii and V. F. Pisarenko, Dokl. Akad. Nauk 285(6), 1359–1361 (1985).
5. M. A. Sadovskii, Dokl. Akad. Nauk 295(3), 571–575 (1987).