@misc{ohlrogge_natural_gas_2002, 
author={Ohlrogge, K.,Brinkmann, T.,Wind, J.},
title={Natural Gas Clean-Up by Means of Membranes},
year={2002},
howpublished = {conference lecture: Toulouse (F); 07.-12.07.2002},
note = {Online available at: \url{} (DOI). Ohlrogge, K.; Brinkmann, T.; Wind, J.: Natural Gas Clean-Up by Means of Membranes. Proceedings, ICOM 2002. Toulouse (F), 2002.}}