@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 = {GKSS report},
note = {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.}}