1676-2592 1676-2592 S1676-25922015000300653 10.20396/etd.v17i3.8638251 Brazil Brazil Brazil 00 12 2015 00 12 2015 17 3 653 672

3 1 1 485-98 10 15 15 1-29 9 1 1 4-16 27 94 94 47-69 5 1 1 29-58