RT Journal Article SR Electronic T1 Path Brazil JF Luso-Brazilian Review JO Luso-Braz Rev FD University of Wisconsin Press SP 119 OP 132 DO 10.3368/lbr.40.2.119 VO 40 IS 2 A1 Charles Martin YR 2003 UL http://lbr.uwpress.org/content/40/2/119.abstract AB