@inproceedings{2004-Proper-ConceptEvolution,
  author		= "{Proper}, H.A. (Erik) and {Hoppenbrouwers}, S.J.B.A. (Stijn)",
  title			= "{Concept Evolution in Information System Evolution}",
  booktitle		= "{Forum proceedings of the 16th Conference on Advanced Information Systems 2004 (CAiSE 2004), Riga, Latvia, EU, Riga, Latvia, EU}",
  editor		= "{Gravis}, J. and {Persson}, A. and {Stirna}, J.",
  month			= "June",
  publisher		= "Faculty of Computer Science and Information Technology",
  address		= "Riga, Latvia, EU",
  year			= "2004",
  isbn			= "ISBN 998497670X",
  code			= "icis.NIII-R0331",
  research_group	= "iris",
  pages			= "63--72",
  class			= "Conference"
}