С. Симеонов (2018). CHARACTERISTICS OF FOREIGN EARTHQUAKES IMPACT RECORDED ON SOUTHWESTERN BULGARIAN TERRITORY. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Ecology, Economics, Education and Legislation, 167-174. https://doi.org/10.5593/sgem2018/5.1/s20.022