Mircea Ticleanu, P. Constantin, O. Colţoi, Alexandru Ticleanu, Flori Colescu (2020). NATURAL CAUSES OF -GLOBAL WARMING-. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th SGEM International Multidisciplinary Scientific GeoConference Proceedings 2020, Science and Technologies in Geology, Exploration And Mining, 197-204. https://doi.org/10.5593/sgem2020/1.1/s01.025