Book (2008) - W.G.M. Maas (author), R Bakker (author), H Ovink (author), IJ Opstelten (author), D.F. Sijmons (author), Abram de Swaan (author), Stephan Veen (author), Agnes van Berg (author), John Bos (author), JA Bussemaker (author), Kees Christiaanse (author), Anton Geesink (author), Jaap Ginneken (author), H Mommaas (author), Liesbeth van Tongeren (author)

Journal article (2003) - H Mommaas (author), A. Romein (author)