- document
- Jak, M.J.G. (author), Kelder, E.M. (author), Van Zomeren, R.A. (author), Schoonman, J. (author) conference paper 1996
- document
- Kelder, E.M. (author), Nijs, O.C.J. (author), Schoonman, J. (author) journal article 1994
- document
- Schoonman, J. (author), Dekker, J.P. (author), Broers, J.W. (author), Kiwiet, N.J. (author) book chapter 1991