@techreport{2002-Grootjen-ConcQueryReform,
  author		= "{Grootjen}, F.A. and {van der Weide}, Th.P.",
  title			= "{Conceptual Query Reformulation}",
  number		= "NIII--R0202",
  institution		= "Computing Science Institute, University of Nijmegen",
  year			= "2002",
  code			= "icis.NIII-R0202",
  research_group	= "iris",
  class			= "Report"
}