1. Monte Carlo studies of the sky radiation at twilight;Blattner;App. Opt.,1974
2. Rotational Raman scattering in planetary atmospheres;Brinkmann;Astrophys. J.,1968
3. The Ring effect in the sodium D2 Fraunhofer line of day skylight over Mawson, Antarctica;Conde;J. Geophys. Res.,1992
4. Delbouille , L. G. Rol L. Neven Photometric atlas of the solar spectrum from 300 nm to 1000 nm 3 Institut d'Astrophysique de l'Université de Liège / Observatoire Royal de Belgique 1981
5. Fish , D. J. Measurements of stratospheric composition using ultraviolet and visible spectroscopy UK 1994