@inbook{1999-Weide-PBNA,
  author		= "Weide, Th.P. van der",
  title			= "{IR bijdrage aan Polyautomatiseringsboekje}",
  publisher		= "PBNA",
  year			= "1999",
  note			= "In Dutch",
  research_group	= "iris",
  class			= "Conference"
}