- document
- Kuijper, C. (author), Cornelisse, J.M. (author), Winterwerp, J.C. (author) report 1993
- document
- Mastbergen, D.R. (author), Kemenade, A.J.M. van (author), Winterwerp, J.C. (author), Pernis, W.J. van (author), Groot, M.B. de (author) report 1987