@misc{fritsch_recent_developments_2006, 
author={Fritsch, D.},
title={Recent developments on solvent stable and fuel cell membranes},
year={2006},
howpublished = {conference lecture (invited): Marl (D); 12.-13.09.2006},
note = {Online available at: \url{} (DOI). Fritsch, D.: Recent developments on solvent stable and fuel cell membranes. Polymer Membranes Workshop, Degussa AG. Marl (D), 2006.}}