1981-8106 1981-8106 S1981-81062017000200262 10.18675/1981-8106.vol27.n55.p262-283 Brazil Brazil 00 08 2017 00 08 2017 27 55 262 283

15 54 54 37 1 1 27 96 96 37 1 1 37 1 1 42 147 147 754-71 13 2 2 203-12 15 3 3 487-96 37 1 1 213-31