- document
- TU Delft (author) public lecture 1998
- document
- TU Delft (author) public lecture 1998
- document
- TU Delft (author) public lecture 1998
- document
- Hengst, S. (author) public lecture 1994
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- Saurwalt, K.J. (author) public lecture 1987
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- public lecture 1985
- document
- public lecture 1972
- document
- public lecture 1970