Journal article (2002) - F.A.F. Fraga (author), L.M.S. Margato (author), S.T.G. Fetal (author), M.M.F.R. Fraga (author), R.F. Ferreira (author), R. Ferreira (author), R.F. Ferreira Marques (author), R. Ferreira Marques (author), A.J.P.L. Policarpo (author), B. Guerard (author), A. Oed (author), G. Manzini (author), T.L. van Vuure (author)