Simona Condurache-Bota. "GREENHOUSE GASES WORLDWIDE: RELATIVE CHANGES, COMPARISONS, VARIATION CAUSES." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies (2018): 459-466. https://doi.org/10.5593/sgem2018/4.2/s19.060