- document
- Helvert, M.A.G. van (author), Wang, Z.B. (author) report 2002
- document
- Jeuken, C. (author), Ruessink, G. (author), Wang, Z.B. (author) report 2002
- document
- Wang, Z.B. (author), Helvert, M.A.G. van (author) report 2001
- document
- Wang, Z.B. (author), Helvert, M.A.G. van (author) report 2001
- document
- Wang, Z.B. (author) report 1997