- document
- Visch, Guido L. (author), Keuning, J.A. (author) report 2009
- document
- Visch, Guido L. (author), Keuning, J.A. (author) report 2009
- document
- Visch, Guido L. (author), Sterk, F. (author), Keuning, J.A. (author) report 2009
- document
- Visch, Guido L. (author), Keuning, Lex (author) report 2009
- document
- Visch, Guido L. (author), Keuning, J.A. (author) report 2008
- document
- Visch, Guido L. (author), Keuning, J.A. (author) report 2008
- document
- Visch, Guido L. (author), Keuning, J.A. (author) report 2008
- document
- Visch, Guido L. (author), Keuning, J.A. (author) report 2008
- document
- Visch, Guido L. (author), Keuning, Lex (author), Poot, Peter (author) report 2007
- document
- Keuning, Lex J.A. (author), Katgert, Michiel (author), Visch, Guido L. (author), Poot, Peter (author) report 2007
- document
- Bos, J.E. (author), van der Hout, I.E. (author), Keuning, J.A. (author) report 2007
- document
- Sheinberg, Rubin (author), Cleary, C. (author), Stambaugh, K. (author), Keuning, Lex (author) report 2006
- document
- Vermeulen, K.J. (author), Keuning, J.A. (author) report 2005
- document
- Keuning, Lex J.A. (author) report 2004
- document
- Vermeulen, K.J. (author), Keuning, J.A. (author) report 2004
- document
- Keuning, J.A. (author) report 2003
- document
- Keuning, J.A. (author) report 2001
- document
- Keuning, Lex J.A. (author), Vermeulen, Kees Jan (author) report 2001
- document
- Keuning, Lex J.A. (author) report 2000
- document
- Keuning, Lex J.A. (author), van Gulik, A.A.M. (author) report 1998