@misc{hicke_different_types_1990, 
author={Hicke, H.-G., Eisold, C.},
title={Different types of polyacrylonitrile membranes for ultrafiltration},
year={1990},
howpublished = {conference lecture: Prag (CZ);},
note = {Hicke, H.; Eisold, C.: Different types of polyacrylonitrile membranes for ultrafiltration. CHISA-Kongress. Prag (CZ), 1990.}}