Journal article (2006) - LX Zhao (author), C.P. Botha (author), JO Bescos (author), R Truyen (author), FM Vos (author), F.M. Vos (author), Frans Vos (author), Frans M. Vos (author), Franciscus M. Vos (author), F. Vos (author), F. M. Vos (author), F.H. Post (author), FH Post (author)