2238-2097 2238-2097 S2238-20972015000300679 10.2015/repub-v24n57set.dez010 Brazil Brazil 00 09 2015 00 09 2015 24 57 679 701

16 41 41 469-84 22 43 43 13 3 3 21 2 (62) 2 (62) 185-206 20 20 8 139-67 33 2 2