@inproceedings{sgem2006paper,
  title = {3D CADASTRE. WHAT? WHY? HOW?},
  author = {V. Gjorgjiev and G. Gjorgjiev},
  booktitle = {6th International Scientific Conference - SGEM},
  year = {2006},
  pages = {305-310},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}