- document
- Hatzigrigoris, S. (author), Heliotis, A.D. (author) report 1992
- document
- report 1992
- document
- Muller-Graf, B. (author) report 1991
- document
- van Dijk, M.A. (author) report 1991
- document
- Bailo, G.M. (author), Penna, R. (author), Ranocchia, D. (author), Rocchie, R. (author) report 1991
- document
- Brunsell, Paul (author) report 1991
- document
- report 1991
- document
- Cooke, P.C. (author), Stone, D.J. (author) report 1991
- document
- Latorre, Robert (author), Charnews, Daniel P. (author) report 1991
- document
- Vantorre, Marc (author) report 1991
- document
- Frieze, P.A. (author) report 1990
- document
- Harvey, K.S. (author) report 1990
- document
- report 1990
- document
- Bolton, Frederic (author) report 1990
- document
- report 1990
- document
- Jones, R.G. (author) report 1990
- document
- report 1989
- document
- Journee, Johan M.J. (author) report 1988
- document
- Dunn, P.D. (author), Marshall, R.A. (author) report 1988
- document
- report 1988