1. Effet du freinage atmosphérique et de la traînée Blectrique sur la trajectoire du satellite LAGEOS;Afonso;C.R. Ac. Sci. Paris,1980
2. Reassessment of the charge and neutral drag of Lageos and its geophysical implications;Afonso;J. Geophys. Res.,1985
3. Orbital effects of LAGEOS seasons and eclipses;Afonso;Ann. Geophysicae.,1989
4. Effects of the earth reflected sunlight on the orbit of the LAGEOS satellite;Anselmo;Astron. Astrophys.,1983