- document
- Dirkzwager, J.M. (author) book 1982
- document
- Dirkzwager, J.M. (author) conference paper 1977
- document
- Dirkzwager, J.M. (author) lecture notes 1972
- document
- Dirkzwager, J.M. (author) lecture notes 1972
- document
- Dirkzwager, J.M. (author) report
- document
- Dirkzwager, J.M. (author) report
- document
- Dirkzwager, J.M. (author) report 1969
- document
- Dirkzwager, J.M. (author) journal article 1968