1982-9949 1982-9949 S1982-99492017000200233 10.17058/rea.v25i2.8645 Brasil Brazil 00 05 2017 00 05 2017 25 2 233 249

22 1 1 114 114 197-223 57 1 1 13-8 18 60 60 27 54 54 31 111 111