- document
- Bakker, P.G. (author), Bannink, W.J. (author) report 1994
- document
- Bannink, W.J. (author), Bakker, P.G. (author) report 1993
- document
- Bannink, W.J. (author), Bakker, P.G. (author) report 1983
- document
- Bakker, P.G. (author), Bannink, W.J. (author), Reyn, J.W. (author) report 1980
- document
- Bannink, W.J. (author), Bakker, P.G. (author) report 1979
- document
- Bakker, P.G. (author), Bannink, W.J. (author) report 1974