Ou, S. C., Liou, K. N., Takano, Y., Rao, N. S., Fu, Q., Heymsfield, A. J., … Kinne, S. A. (1995). Remote sounding of cirrus cloud optical depths and ice crystal sizes from AVHRR data: Verification using FIRE-II IFO measurements. Journal Of The Atmospheric Sciences, 52, 4143-4158. doi:10.1175/1520-0469(1995)052<4143:RSOCCO>2.0.CO;2