@misc{nagel_free_volume_2002, author={Nagel, C.,Guenther-Schade, K.,Fritsch, D.,Strunskus, T.,Faupel, F.}, title={Free volume and transport properties in highly selective polymer membranes}, year={2002}, howpublished = {journal article}, note = {Online available at: \url{} (DOI). Nagel, C.; Guenther-Schade, K.; Fritsch, D.; Strunskus, T.; Faupel, F.: Free volume and transport properties in highly selective polymer membranes. Macromolecules. 2002. vol. 35, no. 6, 2071-2077.}}