@inproceedings{sgem2018s03044,
  title = {DYNAMIC RESISTANCE TEST FOR SAFETY VALVE IN ELECTRO-HYDRAULIC CONTROL SYSTEM FOR POWERED ROOF SUPPORTS},
  author = {Dawid Szurgacz},
  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 = {343-350},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2018/1.3/s03.044}
}