@article{HelsperNiessnerRoenicke2006,
  author    = {Christoph Helsper and R. Nießner and G. R{\"o}nicke},
  title     = {Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R.; Helsper, C.; R{\"o}nicke, G.},
  journal   = {Aerosols : science, technology, and industr. applications of airborne particles ; proceedings of the 1. Internat. Aerosol Conference held Sept. 17-21, 1984, Minneapolis, Minn., U.S.A / ed.: Benjamin Y. H. Liu},
  pages     = {63 -- 66},
  year      = {2006},
}