1390-6542 1390-6542 S1390-65422026000200006 10.29019/enfoqueute.1215 Ecuador Ecuador Ecuador Ecuador 00 06 2026 00 06 2026 17 2 44 49

1981 2018 2017 1987 2014 2001 2017 2018 2017 2011 2016 1995 2022 1997 2015 1976 1981 1995 F. de Mendiburu 2009 2023 2002 2019 2021 2010 2010 2021 2010 2021 2023 2023