@inproceedings{sgem2017s03073,
  title = {NEW SOLUTIONS OF MINING TOOLS FOR HARD ROCK MINING},
  author = {Krzysztof Kotwica and Pawel Mendyka},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining},
  year = {2017},
  pages = {571-580},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2017/13/s03.073}
}