9Judith C. Chow, John G. Watson, James E. Houck. et. A Laboratory suspension Chamber to Measure Fugitive Dust Size Distributions and Chemical Compositions[J]. Atmospheric Envrionment,1994,28(21):3463--3481.
10John G.. Watson, Judith C. Chow, Source Characterization of Major Emission Sources in the Imperial and Mexico Valleys Mong the US/Mexico Border[J]. The science of the Total Environment,2001,276:33---47.