@inproceedings{sgem2008paper,
  title = {AN APPLICATION OF FUZZY SETS TO THE ROCK MASS RATING (RMR) SYSTEM USED IN ROCK ENGINEERING; A CASE STUDY IN IRAN},
  author = {M. Ataei and A. D. Besheli and F. Sereshki and M. Jamshidi},
  booktitle = {8th International Scientific Conference - SGEM2008},
  year = {2008},
  pages = {347-356},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}