@misc{schwarz_membranes_from_1990, 
author={Schwarz, H.-H.,Jacob, E.-M.,Richau, K.,Paul, D.},
title={Membranes from polyelectrolyte complexes: preparation and properties},
year={1990},
howpublished = {conference lecture: Prag (CZ); 26.-31. August 1990},
note = {Online available at: \url{} (DOI). Schwarz, H.; Jacob, E.; Richau, K.; Paul, D.: Membranes from polyelectrolyte complexes: preparation and properties. 10. International Congress Chemical Engineering, Chemical Equipment Design and Automation (CHISA). Prag (CZ), 1990.}}