- document
- Bakker, W.J.W. (author), Boot, G.H. (author), Van den Eijkel, G. (author), Gerritse, A.J. (author), Heerink, M. (author), Korstanje, M.T. (author), De Kort, A.P.R. (author), Kuperus, M. (author), Landesz, S.C. (author), Nijhof, E. (author), Nijssen, S.J. (author), Ornstein, M.J.M. (author), Pluilaartm, A.P.H. (author), Putra, T.P.A (author), Siemers, W.V. (author), Sozef, A.J. (author) report 1990