- document
- Pagee, J.A. van (author) report 1979
- document
- Salomons, W. (author) report 1980
- document
- Taat, J. (author) report 1982
- document
- Ruygh, E.F.W. (author) report 1991
- document
- Gerrits, H.J. (author), Ruygh, E.F.W. (author) report 1991
- document
- Ouboter, M.R.L. (author), Eck, G.T.M. van (author) report 1994