@techreport{2005-Hoppenbrouwers-UnderstandingModelling,
  author		= "Hoppenbrouwers, S.J.B.A. (Stijn) and Proper, H.A. and Weide, Th.P. van der",
  title			= "{Fundamental Understanding of the Act of Modelling}",
  number		= "ICIS-R05006",
  month			= "January",
  institution		= "Radboud University Nijmegen",
  organization		= "Radboud University Nijmegen",
  year			= "2005",
  code			= "icis.ICIS-R05006",
  research_group	= "icis",
  class			= "Report"
}