Starostenko, V. I., T. Burakhovich, A. Kushnir, O. V. Legostaeva, T. Tsvetkova, E. M. Sheremet, and L. A. Shumlyanskaya. “The Possible Nature of the Seismic Activity of the Depths of the Predobudruzhsky Trough and the Northern Dobruja”. Geofizicheskiy Zhurnal, vol. 35, no. 1, Feb. 2013, pp. 61-74, doi:10.24028/gzh.0203-3100.v35i1.2013.116331.