@misc{schwarz_modification_of_1989, 
author={Schwarz, H.-H., Richau, K., Paul, D.},
title={Modification of membrane properties due to chemical attack},
year={1989},
howpublished = {journal article},
note = {Schwarz, H.; Richau, K.; Paul, D.: Modification of membrane properties due to chemical attack. Environment Protection Engineering. 1989. vol. 15, no. 34, 75-81.}}