@misc{gensrich_hohlmembranen__1991, author={Gensrich, H.-J.,Paul, D.}, title={Hohlmembranen}, year={1991}, howpublished = {conference lecture: Aachen (D); 19.-21.03.1991}, note = {Online available at: \url{} (DOI). Gensrich, H.; Paul, D.: Hohlmembranen. Aachener Membran Kolloquium. Aachen (D), 1991.}}