@book{1984-Beiema-Elan0,
  author		= "Beinema, P.F. and Koster, C.H.A. and Weide, Th.P. van der",
  title			= "{Handboek bij de Elan--0 Programmeeromgeving}",
  publisher		= "Educaboek",
  year			= "1984",
  class			= "Book"
}