TY - CPAPER AU - Hudecek, Leopold AU - Cihlarova, Denisa TI - THE PROBLEMS OF RAILWAYS IN THE UNDERMINED AREAS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2015 SP - 713 EP - 718 DO - 10.5593/sgem2015/b13/s3.093 PB - Stef92 Technology ER -