2007-7890 2007-7890 S2007-78902021000400016 10.46377/dilemas.v8i.2599 Ecuador Ecuador Ecuador Ecuador 00 00 2021 00 00 2021 8 spe2

1. 2015 33 4 4 285-97 2. 1988 33 4 4 357-67 3. 2019 35 58 58 4. 1994 32 2 2 267-77 5. 2017 6. 1999 13 5 5 715-26 7. 1999 219 1-2 1-2 20-33