Journal article (2002) - J Brakels (author) , C. van Daalen (author) , MJJM van de Ven (author) , W Dik (author) , Sofia Dopper (author) , C Lohman (author) , A.J. van Peppen (author) , SG Peerdeman (author) , DJ Peet (author) , E Sjoer (author) , WF van Valkenburg (author)