1981-8106 1981-8106 S1981-81062017000300475 10.18675/1981-8106.vol27.n56.p475-492 Brazil Brazil 00 09 2017 00 09 2017 27 56 475 492

3 1 1 58-77 28 100 100 1015-035 20 46 46 249-59 35 129 129 1205-222 31 4 4 135-53