@inproceedings{sgem2004paper,
  title = {GOAL FUNCTIONS, COMPILED BY HYPERBOLIC FUNCTIONS, FOR OPTIMIZING THE EXPENSES FOR MAINTENANCE AND REPAIR OF MINE AUTOMOBILE ROADS},
  author = {I. Markov and A. Smilyanov and G. Trapov and D. Hristanov},
  booktitle = {4th International Scientific Conference - SGEM2004},
  year = {2004},
  pages = {117-126},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}