@inproceedings{sgem2018s01077,
  title = {THE VARIABILITY OF SELECTED QUALITATIVE PARAMETERS OF BITUMINOUS COAL - EAST PART OF THE UPPER SILESIAN COAL BASIN (USCB) CASE STUDY},
  author = {Martyna Paszek},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Mining},
  year = {2018},
  pages = {611-618},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2018/1.1/s01.077}
}