- document
- van der Heijden, E.W.P. (author) other 1997
- document
- Dirkse, C. (author), Wisse, M.J. (author) other 1994
- document
- Ministerie van Verkeer & Waterstaat (author) report 1993
- document
- Innovatie Centrum Zuid-Holland-Zuid (author) report 1992
- document
- van Roosmalen, C.I.M. (author) other 1987
- document
- Krietemeijer, J.H. (author) other 1976
- document
- report 1975