@misc{fischer_detection_of_1991, 
author={Fischer, J.,Grassl, H.},
title={Detection of cloud-top height from backscattered radiances within the Oxygen A Band. Part 1: Theoretical study},
year={1991},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Fischer, J.; Grassl, H.: Detection of cloud-top height from backscattered radiances within the Oxygen A Band. Part 1: Theoretical study. Journal of Applied Meteorology. 1991. vol. 30, no. 9, 1245-1259.}}