Apel, M. A., J. A. V. Rocha, M. V. Coronas, and V. M. F. Vargas. “Exploratory Analysis of the Incidence of Nitro-Naphthalenes in the of Airborne Particulate Matter from Petrochemical Influence Area”. Ecotoxicology and Environmental Contamination, vol. 5, no. 1, Aug. 2010, pp. 55-62, doi:10.5132/jbse.2010.01.009.