1982-9949 1982-9949 S1982-99492016000300047 10.17058/rea.v24i3.7533 Portugal Brazil 00 12 2016 00 12 2016 24 3 47 69

30 109 109 14 1 1 19-36 11 32 32 226-37 29 103 103 535-54 35 125 125 63-80