- document
- Van der Put, P.J. (author), Bauer, R.A. (author), Van den Assem, A. (author), Kruis, F.E. (author), Scarlett, B. (author), Schoonman, J. (author) book chapter 1990
- document
- Bauer, R.A. (author), Van den Assem, A. (author), Van der Put, P.J. (author), Scarlett, B. (author), Schoonman, J. (author) conference paper 1990