@inproceedings{sgem2003paper,
  title = {CHARACTERIZATION OF THE WASTE WATERS FROM “PERNIK” CENTRAL PREPARATION PLANT (BULGARIA) AND THEIR ECOLOGICAL EFFECTS},
  author = {M. G. Yossifova},
  booktitle = {3rd International Scientific Conference - SGEM2003},
  year = {2003},
  pages = {327-334},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}