- document
- Kamer van Koophandel (author) report 1992
- document
- Maritime Economic Research centrum (author) report 1992
- document
- de Beir, R. (author), Hengst, S. (author) other 1991
- document
- de Wilde, J.P. (author) master thesis 1991
- document
- Bogaarts, J.A.G. (author) other 1991
- document
- Marine analytics B.V. (author) report 1991
- document
- van Roosmalen, C.I.M. (author) report 1991
- document
- Bogaarts, J.A.G. (author), Hengst, S. (author) other 1991
- document
- Bogaards, J.A.G. (author) lecture notes 1991
- document
- Bogaards, J.A.G. (author) lecture notes 1991
- document
- Bogaarts, J.A.G. (author) other 1991
- document
- Waals, F.J.A. (author) master thesis 1991
- document
- Havenbedrijf Rotterdam (author) report 1990
- document
- Hengst, S. (author) other 1990
- document
- Hengst, S. (author), van der Hoeven, H.B. (author), Tutuarima, W.H. (author) master thesis 1990
- document
- Bogaards, J.A.G. (author) master thesis 1990
- document
- Europese Gemeenschap (author) report 1990
- document
- Permanent international association of navigation (author) report 1988
- document
- Drewry Shipping Consultants (author) public lecture 1988
- document
- Drewry Shipping Consultants (author) report 1988