1982-9949 1982-9949 S1982-99492015000300030 10.17058/rea.v23i3.6033 Brazil Brazil 00 09 2015 00 09 2015 23 3 30 57

10 19 19 26 69 69 205-29 23 81 81 143-60 25 66 66 249-49