@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 paper,conference lecture: Lille (F); August 18-24, 1989},
note = {Online available at: \url{} (DOI). 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.}}