@inproceedings{sgem2017s01074,
  title = {THE COAL SEAMS OF THE VOLGA-URAL REGION (RUSSIA): COMPOSITION, TRACE ELEMENTS AND CONDITIONS OF THE FORMATION},
  author = {Rinat Khasanov and Shavkat Gafurov and Almaz Mullakaev},
  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 = {591-596},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2017/11/s01.074}
}