@techreport{2003-Grootjen-SemanticTransformations,
  author		= "Grootjen, F.A. and Weide, Th.P. van der",
  title			= "{Semantic Transformations}",
  number		= "NIII--R0303",
  month			= "February",
  institution		= "Radboud University Nijmegen",
  organization		= "Radboud University Nijmegen",
  year			= "2003",
  code			= "icis.NIII-R0303",
  research_group	= "icis",
  class			= "Report"
}