@misc{rockel_threedimensional_modeling_1990, 
author={Rockel, B.,Levkov, L.},
title={Three-dimensional modeling of cirrus clouds in GESIMA},
year={1990},
howpublished = {conference lecture: Geesthacht (D); 02.-04.05.1990},
note = {Online available at: \url{} (DOI). Rockel, B.; Levkov, L.: Three-dimensional modeling of cirrus clouds in GESIMA. ICE International Cirrus Experiment: Second Workshop. Geesthacht (D), 1990.}}