@inproceedings{sgem2013s20105,
  title = {R - MATERIAL AS A LAYER OF RAILWAY TRACKBED},
  author = {Orolin, Peter and Mandula, Jan},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION},
  year = {2013},
  pages = {797 - 804 pp},
  publisher = {Stef92 Technology},
  doi = {10.5593/sgem2013/be5.v1/s20.105}
}