@inproceedings{sgem2008paper,
  title = {STUDY OF POROSITY AND PERMEABILITY OF AIR FILTER MATERIAL IN RESPIRATORY PROTECTION FILTERS},
  author = {C. G. Olmedo and E. Q. AragСѓn and J. G. Torrent and L. M. Pejic and C. F. RamСѓn},
  booktitle = {8th International Scientific Conference - SGEM2008},
  year = {2008},
  pages = {231-240},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}