@misc{hicke_new_results_2004, 
author={Hicke, H.-G.,Lehmann, I.,Malsch, G.,Weigel, T.},
title={New results of GKSS solvent and acid resistant membranes},
year={2004},
howpublished = {conference lecture: Hamburg (D); 28.09.-01.10.2004},
note = {Online available at: \url{} (DOI). Hicke, H.; Lehmann, I.; Malsch, G.; Weigel, T.: New results of GKSS solvent and acid resistant membranes. Euromembrane 2004. Hamburg (D), 2004.}}