@misc{gensrich_hohlmembranen__1991, 
author={Gensrich, H.-J., Paul, D.},
title={Hohlmembranen},
year={1991},
howpublished = {conference lecture: Aachen (D);},
note = {Gensrich, H.; Paul, D.: Hohlmembranen. Aachener Membran Kolloquium. Aachen (D), 1991.}}