1. Energy index of natural bursting ability of coal (in Polish);Szecówka;Transactions of the Central Mining Institute, No. 594,1973
2. Rebound number and the quality of mine roof strata;Kidybiński;Int. J. Rock. Mech. Min. Sci.,1988
3. Rapid method for approximate determining of bursting ability of a coal seam (in Polish);Kidybiński;Przegl. górn.,1978
4. Methods for determining bursting liability of coal (in Polish);Gil;Przegl. górn.,1973
5. Rheologic criterion of bursting liability of coal—in the light of laboratory tests (in Polish);Hladysz,1978