• Risk assessment of vibration impact on roof and pillars stability in Estonian undergroundSabanov, Sergei; Pastarus, Jüri-Rivaldo; Nikitin, Oleg; Väli, Erik5th International Symposium "Topical Problems in the Field of Electrical and Power Engineering". Doctoral School of Energy and Geotechnology : Kuressaare, January 14-19, 20082008 / p. 57-61 : ill