1. Diploma of Invention of USSR Goskomizobret.;L N Rykunov,1983
2. O. B. Khavroshkin, Some Problems of Nonlinear Seismology (OIFZ Ross. Akad. Nauk, Moscow, 1999) [in Russian].
3. L. N. Rykunov, O. B. Khavroshkin, and V. V. Tsyplakov, Nauka Tekhnol. Rossii, Nos. 1-2, 38 (2000).
4. S. A. Shapiro, E. Huenges, and G. Borm, Geophys. J. Int. 131, F15 (1997).
5. S. Stanchits, S. Mayr, S. Shapiro, and G. Dresen, Tectonophysics 503, 129 (2011).