@misc{kneifel_developement_of_1989, 
author={Kneifel, K.,Peinemann, K.-V.,Behling, R.-D.},
title={Developement of hollow fiber membranes for gas and liquid separation processes},
year={1989},
howpublished = {conference paper,conference lecture: Tuebingen (D); September 4-8, 1989},
note = {Online available at: \url{} (DOI). Kneifel, K.; Peinemann, K.; Behling, R.: Developement of hollow fiber membranes for gas and liquid separation processes. In: 6th International Symposium on Synthetic Membranes in Science and Industry. Tuebingen (D). 1989. 95-98.}}