@unpublished{AlthoffKockskaemperTraphoeneretal.1999,
  author  = {Klaus-Dieter Althoff and S. Kocksk{\"a}mper and R. Traph{\"o}ner and W. Wernicke},
  title   = {Knowledge acquisition in the domain of CNC machining centers: the Moltke approach},
  institution = {Fachbereich Informatik},
  series    = {SEKI Report},
  number    = {89,9},
  year    = {1999},
  url  = {http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-3138},
}