Schmid, B.,
R. Ferrare, C. Flynn, R. Elleman, D. Covert,
A. Strawa, E. Welton, D. Turner,
H. Jonsson,
J. Redemann,
J. Eilers, K. Ricci,
A. G. Hallar,
M. Clayton, J. Michalsky,
A. Smirnov,
B. Holben, and J. Barnard (2006), How well do state-of-the-art techniques measuring the vertical profile of tropospheric aerosol extinction compare?,
J. Geophys. Res., 111.