%0 conference object %@ %A Kamusewitz, H.,Bielza, J.M.,Keller, M.,Paul, D. %D 1999 %J Preliminary Proceedings of STM 99 - 10th International Conference on Scanning Tunneling Microscopy (STM 99) %N %P %T The Pneumatic Scanning Force Microscopy -a Technique for the Characterization of Open Porous Materials %U %X