@misc{ohlrogge_engineering_aspects_1999, 
author={Ohlrogge, K.},
title={Engineering Aspects of Membrane Technology},
year={1999},
howpublished = {conference lecture: Geesthacht (D); 31.05.-01.06.1999},
note = {Online available at: \url{} (DOI). Ohlrogge, K.: Engineering Aspects of Membrane Technology. Advanced Course on the Use of Membrane Technology in Environmentel Applications (ACUMTEA). Geesthacht (D), 1999.}}