Radu, Sorin Mihai, Stanila, Sorina. "ENERGETIC EFFICIENCY GROWTH OF COMPRESSED AIR DISTRIBUTION NETWORKS USED IN UNDERGROUND COAL MINES." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING (2013): 447 - 454 pp. https://doi.org/10.5593/sgem2013/ba1.v1/s03.030