@misc{paul_membrane_separation_1999, 
author={Paul, D.},
title={Membrane separation process: a highly sophisticated technology},
year={1999},
howpublished = {conference lecture: Tsukuba (J); 19. 03.1999},
note = {Online available at: \url{} (DOI). Paul, D.: Membrane separation process: a highly sophisticated technology. National Institute of Materials and Chemical Research (NIMC). Tsukuba (J), 1999.}}