@misc{kamusewitz_the_pneumatic_1999, 
author={Kamusewitz, H.,Bielza, J.M.,Keller, M.,Paul, D.},
title={The Pneumatic Scanning Force Microscopy -a Technique for the Characterization of Open Porous Materials},
year={1999},
howpublished = {conference object: null; null},
note = {Online available at: \url{} (DOI). Kamusewitz, H.; Bielza, J.; Keller, M.; Paul, D.: The Pneumatic Scanning Force Microscopy -a Technique for the Characterization of Open Porous Materials. Preliminary Proceedings of STM 99 - 10th International Conference on Scanning Tunneling Microscopy (STM 99). 1999.}}