TY - CPAPER AU - Ladislav Tazky TI - VENTILATION AIR CHANNEL METHODS AND USE OF THEIR OPPORTUNITIES T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, NANO, BIO AND GREEN TECHNOLOGIES FOR A SUSTAINABLE FUTURE PY - 2015 SP - 623 EP - 630 DO - 10.5593/sgem2015/b62/s27.081 PB - Stef92 Technology ER -