@misc{behling_membrantrenntechnik__1997, 
author={Behling, R.-D.},
title={Membrantrenntechnik},
year={1997},
howpublished = {lecture: Universitaet Hannover; 1997},
note = {Online available at: \url{} (DOI). Behling, R.: Membrantrenntechnik. Universitaet Hannover, 1997.}}