GALINDO, IGNACIO, KIRILL YA KONDRATYEV, and GERARDO ZENTENO. 2009. “Determination of the Atmospheric Optical Depth Due to the El Chichon Stratospheric Aerosol Cloud in the Polluted Atmosphere of Mexico City”. Atmósfera 9 (1). https://www.revistascca.unam.mx/atm/index.php/atm/article/view/8396.