@misc{luedtke_concentration_polarization_1998, 
author={Luedtke, O.,Behling, R.-D.,Ohlrogge, K.},
title={Concentration Polarization in Gas Permeation},
year={1998},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Luedtke, O.; Behling, R.; Ohlrogge, K.: Concentration Polarization in Gas Permeation. Journal of Membrane Science. 1998. vol. 146, 145-157.}}