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. Ferreira (author) , A.J.P.L. Policarpo (author) , B. Guerard (author) , A. Oed (author) , G. Manzini (author) , TL van Vuure (author)