Journal article (2005) - S van Donk (author), BM Weckhuysen (author), F. Kapteijn (author), Freek Kapteijn (author), F Kapteijn (author), P.J. Kooyman (author), Patricia J. Kooyman (author), Patricia Kooyman (author), PJ Kooyman (author), P. J. Kooyman (author), EJM Hensen (author)