@misc{storch_modelle_in_2001, 
author={Storch, H.v.},
title={Modelle in der Umwelt},
year={2001},
howpublished = {conference lecture: Geesthacht (D); 21.05.2001},
note = {Online available at: \url{} (DOI). Storch, H.: Modelle in der Umwelt. Rotarier Club Geesthacht. Geesthacht (D), 2001.}}