@inproceedings{sgem2018s17088,
  title = {THE FUTURE OF HARD COAL AS A GUARANTOR OF ENERGY SECURITY IN POLAND},
  author = {Aurelia Rybak},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies},
  year = {2018},
  pages = {681-688},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2018/4.1/s17.088}
}