@inproceedings{sgem2008paper,
  title = {IRON AND MANGANESE REMOVAL BY ZEOLITE},
  author = {S. Dimitrova and I. Kostova and K. Ivanova and S. Lazarova},
  booktitle = {8th International Scientific Conference - SGEM2008},
  year = {2008},
  pages = {129-136},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}