- document
- Tanczos, I.C. (author), Ormondt, M. van (author), Roelvink, J.A. (author), Bruinsma, R. (author) report 2003
- document
- Eysink, W.D. (author), Walstra, D.J.R. (author), Stive, M.J.F. (author) report 2001
- document
- report 1995
- document
- Steetzel, H.J. (author) report 1995