O. Gustafsson, Krusa, M., Zencak, Z., Sheesley, R. J., Granat, L., Engstrom, E., Praveen, P. S., Rao, P. S. P., Leck, C., and Rodhe, H.,
“Brown Clouds over South Asia: Biomass or Fossil Fuel Combustion?”,
Science, vol. 323, no. 5913, pp. 495-498, 2009.
Z. Zencak, Elmquist, M., and Gustafsson, O.,
“Quantification and radiocarbon source apportionment of black carbon in atmospheric aerosols using the CTO-375 method”,
Atmospheric Environment, vol. 41, no. 36, pp. 7895-7906, 2007.