BBC News. "Guatemala volcano: Fuego eruption showers towns in ash." February Sunday, 2015.
Centro Mario Molina. Implications of air pollution on health in Mexico City’s Metropolitan Area and the potential benefits of applying control measures. Mexico: Centro Mario Molina, 2014.
Cicero-Fernandez, Pablo, et al. Evaluation of Human Exposure to Ambient PM10 in the Metropolitan Area of Mexico City Using a GIS-Based Methodology. Air & Waste Management Association, Air & Waste Management Association, 2001.
Davis, Lucas W. The Effect of Driving Restrictions on Air Quality in Mexico City. University of Michigan, Michigan: University of Michigan.
Earth, Assignment. Mexico City. Produced by Assignment Earth. 2007.
European Commission. Air Quality Standards. European Commission. February 17, 2015. http://ec.europa.eu/environment/air/quality/standards.htm (accessed February 22, 2015).
Hibler , Michelle. Mexico — Taking control of air pollution in Mexico City. Communications Division, IDRC, Ottawa: IDRC.
Molina, Mario J., and Luisa T. Molina. Air Quality in the Mexico Mega City. Edited by Mario J. Molina and Luisa T. Molina. Mexico City: Springer Science and Business Media, 2002.
Molina, Mario J., and Luisa T. Molina. "Reducing the Impact of Vehicles On Air and Environmental Quality in Cities." Edited by Mario J. Molina and Luisa T. Molina. The Mexico City Air Quality Case Study. Massachusetts: Massachusetts Institute of Technology.
Soto, Gloria. MEXICO CITY’S 10 YEAR PLAN FOR IMPROVING AIR QUALITY. Secretariat of Environment, Government of Mexico, Mexico CIty: Government of Mexico, 2000.
Boodram, Sherry. 2012. Car Chemistry: What Is a Catalytic Converter and How Does It Work. 7 23. Accessed 3 2015, 18. http://www.explorecuriocity.org/Content.aspx?contentid=1779.
Energy & Environmental Research Center. 2012. Advanced Hybrid ™ Filter Technology. North Dakota: Energy & Environmental Research Center.
United States Environmental Protection Agency. n.d. Gasoline Sulfur Program. Accessed 3 18, 2015. http://www.epa.gov/otaq/fuels/gasolinefuels/gasolinesulfur/index.htm.
Centro Mario Molina. Implications of air pollution on health in Mexico City’s Metropolitan Area and the potential benefits of applying control measures. Mexico: Centro Mario Molina, 2014.
Cicero-Fernandez, Pablo, et al. Evaluation of Human Exposure to Ambient PM10 in the Metropolitan Area of Mexico City Using a GIS-Based Methodology. Air & Waste Management Association, Air & Waste Management Association, 2001.
Davis, Lucas W. The Effect of Driving Restrictions on Air Quality in Mexico City. University of Michigan, Michigan: University of Michigan.
Earth, Assignment. Mexico City. Produced by Assignment Earth. 2007.
European Commission. Air Quality Standards. European Commission. February 17, 2015. http://ec.europa.eu/environment/air/quality/standards.htm (accessed February 22, 2015).
Hibler , Michelle. Mexico — Taking control of air pollution in Mexico City. Communications Division, IDRC, Ottawa: IDRC.
Molina, Mario J., and Luisa T. Molina. Air Quality in the Mexico Mega City. Edited by Mario J. Molina and Luisa T. Molina. Mexico City: Springer Science and Business Media, 2002.
Molina, Mario J., and Luisa T. Molina. "Reducing the Impact of Vehicles On Air and Environmental Quality in Cities." Edited by Mario J. Molina and Luisa T. Molina. The Mexico City Air Quality Case Study. Massachusetts: Massachusetts Institute of Technology.
Soto, Gloria. MEXICO CITY’S 10 YEAR PLAN FOR IMPROVING AIR QUALITY. Secretariat of Environment, Government of Mexico, Mexico CIty: Government of Mexico, 2000.
Boodram, Sherry. 2012. Car Chemistry: What Is a Catalytic Converter and How Does It Work. 7 23. Accessed 3 2015, 18. http://www.explorecuriocity.org/Content.aspx?contentid=1779.
Energy & Environmental Research Center. 2012. Advanced Hybrid ™ Filter Technology. North Dakota: Energy & Environmental Research Center.
United States Environmental Protection Agency. n.d. Gasoline Sulfur Program. Accessed 3 18, 2015. http://www.epa.gov/otaq/fuels/gasolinefuels/gasolinesulfur/index.htm.