@misc{happ_estimation_of_1989, 
author={Happ, S., Fang, X., Lin, W.-H., Rieland, M., Stuhlmann, R.},
title={Estimation of global radiation with the help of satellites},
year={1989},
howpublished = {conference lecture: Lille (F);},
note = {Happ, S.; Fang, X.; Lin, W.; Rieland, M.; Stuhlmann, R.: Estimation of global radiation with the help of satellites. In: Lenoble, J.; Geleyn, J. (Ed.): Proceedings of the International Radiation Symposium. Lille (F). 1989. 498-501.}}