- document
- Kullberg, J. (author), Van Aalst, I. (author) book 1999
- document
- Kessels, I. (author), Kullberg, J. (author) book 1998
- document
- Van Rosmalen, B. (author), Kullberg, J. (author) book 1997
- document
- Elsinga, M. (author) book 1991
- document
- Adrianow, S. (author), Elsinga, M. (author), Hoenderdos, T. (author) book 1991
- document
- Adrianow, S. (author) book 1991