Book (2010) - L Pijlman (author), R van den Hazel (author), E. Louw (author), H.W. de Wolff (author), M. van der Sluis (author), C.C.M. Adriaanse (author), A.L. Ouwehand (author), A. Romein (author), J.J. Trip (author), J.S.C.M. Hoekstra (author), M Vaessen (author), J Nicasie (author), M Fokkema (author), E Borgmeijer (author), P Draaijer (author), W Nieuwenhuis (author), E Radstake (author), W.K. Korthals Altes (author)

Journal article (2009) - H.W. de Wolff (author), R van den Hazel (author), M Vaessen (author)

Book (2007) - R van den Hazel (author), M Vaessen (author), H.W. de Wolff (author)