%0 conference paper,conference lecture %@ %A Kamusewitz, H.,Fritzsche, W.,Bielza, J. M.,Keller, M.,Paul, D. %D 1997 %J 9. International Conference on Scanning Tunneling Microscopy %N %P 282 %T Characterization of Polymeric Membranes by Means of Pneumatic Scanning Force Microscopy %U %X