@misc{michaelis_seminar_ueber_1991, author={Michaelis, W.}, title={Seminar ueber Umweltphysik}, year={1991}, howpublished = {lecture: Universitaet Hamburg; 1991}, note = {Online available at: \url{} (DOI). Michaelis, W.: Seminar ueber Umweltphysik. Universitaet Hamburg, 1991.}}