@inproceedings{sgem2018s02045,
  title = {HYDROGEOLOGICAL RESEARCH METHODS AS A TOOL FOR ASSESSMENT OF THE FREE SPACE CAPACITY IN ROCK MASS, GOAFS AND MINING EXCAVATIONS IN COAL MINES IN UPPER SILESIAN COAL BASIN},
  author = {Przemysław Bukowski},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Minining},
  year = {2018},
  pages = {357-364},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2018/1.2/s02.045}
}