- document
- Hengst, S. (author) book 1997
- document
- Daghigh, M. (author), Hengst, S. (author), Vrouwenvelder, A. (author), Boonstra, H. (author) other 1994
- document
- Hengst, S. (author), v d Biggelaar, B.N.P.M. (author) master thesis 1990
- document
- Hengst, S. (author), Stijnen, P. (author) other 1987
- document
- Hengst, S. (author), Vijn, J.F. (author), Saurwalt, K.J. (author) master thesis 1985
- document
- Pinotsis, N. (author), Hengst, S. (author) lecture notes 1984