@misc{mueller_separation_of_1999, 
author={Mueller, J.,Peinemann, K.-V.},
title={Separation of acetylene from ethylene and ethane using facilitated transport membranes},
year={1999},
howpublished = {conference paper: Leuven (B); 19.-22.09.1999},
note = {Online available at: \url{} (DOI). Mueller, J.; Peinemann, K.: Separation of acetylene from ethylene and ethane using facilitated transport membranes. In: Euromembrane 99. Leuven (B). 1999. 149-151.}}