@article{2004-Proper-Evenwicht,
  author		= "{Proper}, H.A. (Erik)",
  title			= "{Systeemontwikkeling is Evolutie}",
  journal		= "Informatie",
  number		= "6",
  volume		= "46",
  year			= "2004",
  note			= "In Dutch",
  code			= "icis.NIII-R05008",
  research_group	= "iris",
  pages			= "44--48",
  class			= "Professional"
}