@misc{schwarz_membranes_from_1991, 
author={Schwarz, H.-H., Richau, K., Paul, D.},
title={Membranes from polyelectrolyte complexes},
year={1991},
howpublished = {journal article},
note = {Schwarz, H.; Richau, K.; Paul, D.: Membranes from polyelectrolyte complexes. Polymer Bulletin. 1991. vol. 25, 95-100.}}