Aerosol particles in the upper troposphere and lower stratosphere: Elemental composition and morphology of individual particles in northern midlatitudes

Sheridan, P.J., C.A. Brock, and J.C. Wilson (1994), Aerosol particles in the upper troposphere and lower stratosphere: Elemental composition and morphology of individual particles in northern midlatitudes, Geophys. Res. Lett., 21, 2587-2590.