1. Albers, F., Quante, M., Raschke, E., 1990: Aircraft Measurements in High-Altitude Contrails During ICE 1989. 7th Conference on Atmospheric Radiation, July 23?27, 1990, San Francisco.
2. Appleman, H., 1953: The formation of exhaust condensation trails by jet aircraft.Bull. Amer. Meteor. Soc. 34(1), 14?20.
3. Brown, S. R., 1989: Appendix-B NOAA-H/11. Ammendments to NOAA Technical Memorandum 107. NESDIS, Washington D.C.
4. Deirmendjian, 1969:Electromagnetic Scattering on Spherical Polydispersions. New York: Elsevier.
5. Dowling, H. D., Williams, D., 1975: Optical constants of water in the infrared.J. Geophys. Res. 80, 1656?1661.