HERRERA MURILLO, J., J. F. ROJAS MARÍN, S. RODRÍGUEZ ROMÁN, and A. P. BAEZ PEDRAJO. “Concentration of PM10 in the Metropolitan Area of Costa Rica, Central America: Chemical Composition and Potential Sources”. Atmósfera, vol. 23, no. 4, Oct. 2010, https://www.revistascca.unam.mx/atm/index.php/atm/article/view/19483.