@misc{ansmann_measurement_of_1990, 
author={Ansmann, A., Riebesell, M., Weitkamp, C.},
title={Measurement of atmospheric aerosol extinction profiles with a Raman lidar},
year={1990},
howpublished = {GKSS report},
note = {Ansmann, A.; Riebesell, M.; Weitkamp, C.: Measurement of atmospheric aerosol extinction profiles with a Raman lidar. Optics Letters. 1990. vol. 15, no. 13, 746-748.}}