@misc{kudela_properties_of_1989, 
author={Kudela, F.,Richau, K.,Schwarz, H.-H.,Paul, D.},
title={Properties of additionally charged cellulose acetate membranes},
year={1989},
howpublished = {conference paper,conference lecture: Torun (PL); September 11-15, 1989},
note = {Online available at: \url{} (DOI). Kudela, F.; Richau, K.; Schwarz, H.; Paul, D.: Properties of additionally charged cellulose acetate membranes. In: Proceedings of the International Symposium on Membranes and Membrane Separation. Torun (PL). 1989. 197-199.}}