1. MSc., Eng., AGH University of Science and Technology, Department of Geomechanics, Civil Engineering and Geotechnics, Av. Mickiewicza 30, 30-059Cracow, Poland
2. PhD., Eng., AGH University of Science and Technology, Department of Geomechanics, Civil Engineering and Geotechnics, Av. Mickiewicza 30, 30-059Cracow, Poland