@misc{fischer_sunstimulated_chlorophyll_1991, 
author={Fischer, J.,Schluessel, P.},
title={Sun-stimulated chlorophyll flourescence - 2: Impact of atmospheric properties},
year={1991},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Fischer, J.; Schluessel, P.: Sun-stimulated chlorophyll flourescence - 2: Impact of atmospheric properties. International Journal of Remote Sensing. 1991. vol. 11, no. 12, 2149-2162.}}