@article{GerhardtKonrathLieb2008,
  author    = {Hans Joachim Gerhardt and B. Konrath and R.-D. Lieb},
  title     = {Das Drallrohr},
  journal   = {HLH : L{\"u}ftung, Klima, Heizung, Sanit{\"a}r, Geb{\"a}udetechnik. 56 (2005), H. 11},
  pages     = {91 -- 95},
  year      = {2008},
}