2218-3620 2218-3620 S2218-36202022000500236 Ecuador 00 10 2022 00 10 2022 14 5 236 247

2019 2018 2021 2008 100 613-28 2011 103 3 3 632-48 2004 64 64 365-82 2019 14-23 2019 18 4 4 1-13 2016 55 1 1 2000 2017 35 2 2 445-64 2011 2021 25 2 2 351-65 2000 451-502 2000 92 3 3 544-55 2002 30 30 39-62 2017 82 82 1-26 2020 Universidad Técnica del Norte 2019 2019 12 877-87