By Davies, A. Mark, Cassar-Pullicino, Victor N., Baert, Albert L.
By Freeman, Alan H., Sala, E., Baert, A.L.
By Bianchi, Stefano, Martinoli, Carlo, Baert, A.L., Derchi, L.E., Rizzatto, G., Valle, M., Zamorani, M.P., Abdelwahab, I.F.
By Baert, Patrick, Carreira da Silva, Dr Filipe
By Jackson, Alan, Buckley, David L., Parker, Geoffrey J. M., Baert, A.L: