AZRI, C., A. MAALEJ, K. MEDHIOUB, and R. ROSSET. 2009. “Evolution of Atmospheric Pollutants in the City of Sfax (Tunisia) (October 1996-June 1997)”. Atmósfera 20 (3). https://www.revistascca.unam.mx/atm/index.php/atm/article/view/8580.