@inproceedings{2002-Grootjen-ConcRelFeedb,
  author		= "Grootjen, F.A. and Weide, Th.P. van der",
  title			= "{Conceptual Relevance Feedback}",
  booktitle		= "{Proceedings of the 2002 IEEE International Conference on Systems, Man and Cybernetics, (NLPKE 2002)}",
  month			= "October",
  year			= "2002",
  research_group	= "iris",
  class			= "Conference"
}