Mihai Popa. "CHARGING RISK WITH ELECTROSTATIC CHARGES OF WORKERS FROM EX AREAS." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining, 2019, pp. 697-704. https://doi.org/10.5593/sgem2019/1.2/s06.088