@unpublished{KoettingMaurer1999,
  author  = {Boris K{\"o}tting and Frank Maurer},
  title   = {A concept for supporting the formation of Virtual Corporations through negotiation},
  institution = {Fachbereich Informatik},
  year    = {1999},
  url         = {http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:386-kluedo-2068},
}