@misc{doerffer_rosis_an_1989, 
author={Doerffer, R.,Grassl, H.,Kunkel, B.,Piepen, H. van d.},
title={ROSIS: an advanced imaging spectrometer for the monitoring of water colour and chlorophyll fluorescence},
year={1989},
howpublished = {book part,GKSS report},
note = {Online available at: \url{} (DOI). Doerffer, R.; Grassl, H.; Kunkel, B.; Piepen, H.: ROSIS: an advanced imaging spectrometer for the monitoring of water colour and chlorophyll fluorescence. In: Advanced optical instrumentation for remote sensing of the earth's surface from space - SPIE Proceedings. Bellingham: SPIE. 1989. 117-121.}}