- document
- Lewandowski, Edward M. (author) book 2004
- document
- Govers, Herman (author) book 2003
- document
- Pastoor, L. Wouter (author) book 2003
- document
- Wijnolst, Niko (author) book 1997
- document
- Schoemaker, H.J. (author) book 1971
- document
- Strscheletzky, M. (author) book 1950