@inproceedings{sgem2008paper,
  title = {LOWERING THE ESTIMATION VARIANCE BY LITHOLOGY AND ALTERATION SEPARATION},
  author = {O. Asghari and A. Hezarkhani and V. Rafie},
  booktitle = {8th International Scientific Conference - SGEM2008},
  year = {2008},
  pages = {487-496},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}