@inproceedings{737,
  author = {David Toman and Grant Weddell},
  title = {On Attributes, Roles, and Dependencies in Description Logics and The Ackermann Case of the Decision Problem},
  year = {2001},
  journal = {On Attributes, Roles, and Dependencies in Description Logics and The Ackermann Case of the Decision Problem},
  url = {http://ceur-ws.org/Vol-49/TomanWeddell-76start.ps},
}