1982-9949 1982-9949 S1982-99492018000100214 10.17058/rea.v26i1.11303 Brazil 00 04 2018 00 04 2018 26 1 214 229

12 1 1 89-102 15 1 1 1-11 101-06 19 19 193-213 26 3 3 336-45 23 23 433-69 64 64 113-38 19 49 49 199-214 3 1 1 7-24