@misc{egmond_new_polymer_1998, 
author={Egmond, M.C.van},
title={New Polymer Membranes - Preparation, analysis and permeability measurements (Studienarbeit)},
year={1998},
howpublished = {study thesis: University Twente, Enschede},
note = {Online available at: \url{} (DOI). Egmond, M.: New Polymer Membranes - Preparation, analysis and permeability measurements (Studienarbeit). University Twente, Enschede, 1998.}}