1870-3569 1870-3569 S1870-35692022000100093 10.46530/cf.vi34/cnfns.n34.p93-100 00 05 2022 00 05 2022 18 34 93 100 2017 2017 2019 26 2 2 1-8 2019 2020 2019 2019 2019