@inproceedings{sgem2007paper,
  title = {SOME GEOCHEMICAL AND MINERALOGICAL FEATURES OF SOIL SAMPLES FROM THE HIGH PARTS OF VITOSHA MOUNTAIN},
  author = {N. Zhivkova and P. Petrov and K. Markova and F. Ottner and A. Mentler},
  booktitle = {7th International Scientific Conference - SGEM2007},
  year = {2007},
  pages = {},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}