@misc{boeddeker_membrantechnik__1990, author={Boeddeker, K.W.}, title={Membrantechnik}, year={1990}, howpublished = {lecture: Technische Universitaet Hamburg-Harburg; 1990}, note = {Online available at: \url{} (DOI). Boeddeker, K.: Membrantechnik. Technische Universitaet Hamburg-Harburg, 1990.}}