- document
- Gerritsma, J. (author) report 1973
- document
- Gerritsma, J. (author), Moeyes, G. (author) journal article 1973
- document
- Gerritsma, J. (author) conference paper 1971
- document
- Moeyes, G. (author), Gerritsma, J. (author), Meijer, M.C. (author) conference paper 1971
- document
- Gerritsma, J. (author) conference paper 1969