%0 conference lecture %@ %A Kruse, J.,Kanzow, J.,Raetzke, K.,Faupel, F.,Heuchel, M.,Hofmann, D. %D 2004 %J DPG, AKF-Fruehjahrstagung %N %P %T Free volume in polymeric membranes: comparison of positron annihilation lifetime spectroscopy and evaluation of MD simulations %U %X