1676-2592 1676-2592 S1676-25922018000100098 10.20396/etd.v20i1.8647796 Brazil Brazil 00 03 2018 00 03 2018 20 1 98 117

11 22 22 16 46 46 235-54 26 90 90 239-65 16 47 47 443-81