@misc{shukla_1butenenbutane_separation_1989, 
author={Shukla, S. K.,Peinemann, K.-V.},
title={1-butene/n-butane Separation using fixed carrier membranes},
year={1989},
howpublished = {conference lecture: Tuebingen (D); September 4-8, 1989},
note = {Online available at: \url{} (DOI). Shukla, S.; Peinemann, K.: 1-butene/n-butane Separation using fixed carrier membranes. 6th International Symposium on Synthetic Membranes in Science and Industry. Tuebingen (D), 1989.}}