- document
- Karelse, M. (author) report 1979
- document
- Abraham, G. (author) report 1986
- document
- Abraham, G. (author) report 1974
- document
- Vliet, F.W.J. van (author) report 1997
- document
- Karelse, M. (author) report 1981
- document
- Pagee, J.A. van (author), Markus, A.A. (author) report 1988
- document
- Karelse, M. (author) report 1978
- document
- Karelse, M. (author) report 1979
- document
- Karelse, M. (author) report 1981