@misc{pereiranunes_ultrafiltration_membranes_1992, 
author={Pereira Nunes, S.,Peinemann, K.-V.},
title={Ultrafiltration membranes from PVDF/PMMA blends},
year={1992},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Pereira Nunes, S.; Peinemann, K.: Ultrafiltration membranes from PVDF/PMMA blends. Journal of Membrane Science. 1992. vol. 73, 25-35.}}