1. Air Resource Specialists, 1994. Standard operating procedures and technical instructions for nephelometer systems. ARS, 1901 Sharp Point Drive, Ste. E., Ft. Collins, CO 80525.
2. Aerosols from biomass burning over the tropical South Atlantic region;Anderson;Journal of Geophysical Research,1996
3. Photoacoustic spectrometer for measuring light absorption by aerosol;Arnott;Atmospheric Environment,1999
4. Campbell, D., Perley, B.P., Eldred, R.A., 1997. Measurement of the aerosol absorption coefficient for the IMPROVE Network. In: Proceedings of the Speciality Conference Visual Air Quality: Aerosols and Global Radiation Balance, American Geophysical Union and Air and Waste Management Association, Pittsburgh, PA, pp. 281–291.
5. The DRI thermal/optical reflectance carbon analysis system;Chow;Atmospheric Environment,1993