@misc{ohlrogge_membranes_separation_2006, 
author={Ohlrogge, K., Stuerken, K.},
title={Membranes: Separation of Organic Vapors from Gas Streams},
year={2006},
howpublished = {book part},
note = {Ohlrogge, K.; Stuerken, K.: Membranes: Separation of Organic Vapors from Gas Streams. In: Ullmann's Encyclopedia of Industrial Chemistry: Electronic Release, 7th Edition. Weinheim: Wiley. 2006.}}