TY - CPAPER AU - Blazev, Krsto AU - Delipetrev, Marjan AU - Doneva, Blagica AU - Delipetrov, Todor AU - Dimov, Gorgi TI - FILTRATION MODEL OF OPALIZED VOLCANIC TUFFS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2014 DO - 10.5593/sgem2014/b12/s2.048 PB - Stef92 Technology ER -