Ivelina Georgieva. "ANALYSIS OF DYNAMICAL AND CHEMICAL PROCESSES WHICH FORM ATHMOSPHERIC COMPOSITION OVER BULGARIA." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th SGEM International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies (2018): 167-180. https://doi.org/10.5593/sgem2018v/4.3/s06.021