Andrews, E., Sheridan, P. J., Fiebig, M., McComiskey, A., Ogren, J. A., Arnott, W. P., Covert, D. S., Elleman, R., Gasparini, R., Collins, D., Jonsson, H., Schmid, B., Wang, J. (2006). Comparison of methods for deriving aerosol asymmetry parameter, J Geophys Res-Atmospheres, 111 (D5)