@article{HelsperBartzFissanetal.2006,
  author    = {Christoph Helsper and H. Bartz and H. J. Fißan and Y. (u.a.) Kousaka},
  title     = {Response Characteristics for Four Condensation Nucleus Counters to Particles in the 3 to 50 nm Diameter Range / Bartz, H. ; Fißan, H. J. ; Helsper, C.; Kousaka, Y. ; Okuyama, K. ; Keady, R. Fruin, S. ; McMurry, P. H.; Pui, D. Y. H. ; Stolzenburg, M. R.},
  journal   = {Journal of Aerosol Science. 16 (1985), H. 5},
  pages     = {443 -- 456},
  year      = {2006},
}