1676-2592 1676-2592 S1676-25922018000100049 10.20396/etd.v20i1.8647431 Brazil Brazil 00 03 2018 00 03 2018 20 1 49 65

22 22 22 435-73 19 1 1 35 124 124 113-30 5 8 8 27-41 16 2 2 233-48 4 2 2 39-48 21 21 18 37 37 551-68 11 32 32 226-37