@Article{stumme008thinternational,
  author = {Stumme, G.},
  title  = {8th International Conference on Conceptual Structures. Conference Report},
  journal = {Knowledge Organization},
  year   = {2000},
  number = {3},
  url    = {http://www.kde.cs.uni-kassel.de/stumme/papers/2000/ConferenceReportICCS00.pdf},

  const  = {\ text}
}
@Proceedings{stumme00working,

  title  = {Working with Conceptual Structures -- Contributions to ICCS 2000. Suppl. Proc. 8th International
                  Conference on Conceptual Structures (ICCS 2000)},

  year   = {2000},
  number = {},
  url    = {},

  const  = {\ text}
}