@inproceedings{sgem2004paper,
  title = {BASES FOR INVESTIGATION OF THE CHANGE OF EXPENDITURE FOR MAINTENANCE OF ROADS BY THE METHODS OF STATISTICAL MODELING},
  author = {G. Trapov and I. Markov and A. Smilyanov and D. Hristanov and V. Balikov},
  booktitle = {4th International Scientific Conference - SGEM2004},
  year = {2004},
  pages = {103-110},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}