@inproceedings{sgem2009paper,
  title = {PRELIMINARY STUDY OF VIABILITY OF WATER TROUGH BARRIERS USE IN SPANISH COAL MINING INDUSTRY},
  author = {L. M. Pejic and J. G. Torrent and K. Lebecki and C. F. Ramon and J. C. Loya},
  booktitle = {9th International Multidisciplinary Scientific GeoConference SGEM2009},
  year = {2009},
  pages = {449-456},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}