1982-9949 1982-9949 S1982-99492016000300105 10.17058/rea.v24i3.7557 Brazil Brazil Brazil Brazil 00 12 2016 00 12 2016 24 3 105 122

5 2 2 3 3 9 26 26 81-90 5 8 8 11-23 42 147 147 900-19 1 1 1 31-42 9 2 2 1-30