Surface mining technology in the zones of tectonic disturbances, Estonian oil shale depositPastarus, Jüri-Rivaldo; Sõstra, Ülo; Valgma, Ingo; Kolotogina, Ljudmilla; Anepaio, Ain; Vannus, Ants; Nurme, MartinOil shale2013 / p. 326-335 : ill https://artiklid.elnet.ee/record=b2631758*est