@misc{nitsche_separation_of_1998, 
author={Nitsche, V.,Ohlrogge, K.,Stuerken, K.},
title={Separation of organic vapors by means of membranes},
year={1998},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Nitsche, V.; Ohlrogge, K.; Stuerken, K.: Separation of organic vapors by means of membranes. Chemical Engineering and Technology. 1998. vol. 21, no. 12, 925-935.}}