@misc{fritsch_membranes_developed_1997, 
author={Fritsch, D.},
title={Membranes developed at GKSS for gas/vapor separation or pervaporation},
year={1997},
howpublished = {conference lecture: Montpellier (F); 26.-27.05.1997},
note = {Online available at: \url{} (DOI). Fritsch, D.: Membranes developed at GKSS for gas/vapor separation or pervaporation. Atelier Methodologique Membranes et Séparation de Gaz. Montpellier (F), 1997.}}