@unpublished{KoettingMaurer1999, author = {Boris K{\"o}tting and Frank Maurer}, title = {A concept for supporting the formation of Virtual Corporations through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}, }