- document
- Segal, G. (author), Kassels, K. (author), Wesseling, P. (author) report 1996
- document
- Zijlema, M. (author), Segal, A. (author), Wesseling, P. (author) report 1994
- document
- Wesseling, P. (author), Segal, A. (author), Kan, J. (author) report 1991