- document
- van Oortmerssen, L.G. (author) book 1990
- document
- Pinkster, Jo A. (author), van Oortmerssen, G. (author) conference paper 1978
- document
- Pinkster, J.A. (author), van Oortmerssen, G. (author) conference paper 1977
- document
- van Oortmerssen, G. (author) conference paper 1977