@article{GartzenLingensSchoenbohmetal.1993,
  author    = {Gartzen, Johannes and Lingens, Hans and Sch{\"o}nbohm, J. and Baumjohann, F. and Gebhardt, Andreas},
  title     = {Laserh{\"a}rten - im Verbund m{\"o}glich. Forschungsverbund Lasertechnik NRW auf der Suche nach neuen Laseranwendungen},
  series = {Technica, Rupperswil. 42 (1993), H. 24},
  journal   = {Technica, Rupperswil. 42 (1993), H. 24},
  isbn      = {0040-866X},
  pages     = {14 -- 18},
  year      = {1993},
  language  = {de}
}
@article{Gebhardt1989,
  author    = {Gebhardt, Andreas},
  title     = {H{\"a}rten von Kurbelwellen},
  pages     = {1 -- 14},
  year      = {1989},
  language  = {de}
}