- document
- Mosselman, E. (author), Akkerman, G.J. (author), Verheij, H.J. (author), Hoffmans, G.J.C.M. (author), Jongeling, T.H.G. (author), Petit, H.A.H. (author) report 2000
- document
- Flokstra, C. (author), Jagers, H.R.A. (author), Wiersma, F.E. (author), Mosselman, E. (author), Jongeling, T.H.G. (author) report 2003