@book{GuempelArltDoerenetal.1996,
  author    = {G{\"u}mpel, Paul and Arlt, Norbert and D{\"o}ren, Horst-Peter and Heimann, Winfried and Kiesheyer, H. and Schmitz, Karl W. and Uhlig, Georg},
  title     = {Rostfreie St{\"a}hle. Grundwissen, Konstruktions- und Verarbeitungsweise = Stainless steels. Kontakt \& Studium. Bd. 493},
  publisher = {Expert-Verl.},
  address   = {Renningen},
  isbn      = {3-8169-1080-7},
  pages     = {265 S.: Ill., graph. Darst.},
  year      = {1996},
  language  = {de}
}
@book{Doeren1977,
  author    = {D{\"o}ren, Horst-Peter},
  title     = {Anwendung von AlN- bzw. AlN-Al2O3-Mischungen als Festelektrolyt in Eisenschmelzen bei 1640° C},
  address   = {Aachen},
  pages     = {52 S., 33 Bl. : Ill.},
  year      = {1977},
  language  = {de}
}