@inproceedings{sgem2008paper,
  title = {RECOVERY OF ZINC FROM K-FELDSPAR BY SAPONIN BIOSURFACTANT},
  author = {Y. Asci},
  booktitle = {8th International Scientific Conference - SGEM2008},
  year = {2008},
  pages = {645-650},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}