@misc{paul_introduction_in_1993, author={Paul, D.}, title={Introduction in membrane technology}, year={1993}, howpublished = {conference lecture (invited): Krems (A); 16.-23. Oktober 1993}, note = {Online available at: \url{} (DOI). Paul, D.: Introduction in membrane technology. Intensive Course on Blood Material Interaction. Krems (A), 1993.}}