1990-8644
1990-8644
S1990-86442021000300194
Ecuador
00
06
2021
00
06
2021
17
80
194
200
[
1974
]
[
2017
México
]
[
1999
]
[
2016
42
4
4
31-48
]
[
2019
2
2
2
36-44
]
[
2020
16
1
1
31-55
]
[
2020
16
2
2
292-310
]
[
2017
14
43
43
39-53
]
[
Fundación Universia
2014
]
[
2020
11
30
30
115-36
]
[
1993
16
135-44
]
[
2019
15
66
66
104-10
]
[
2017
17
59
59
30-9
]
[
2019
2
1
1
9-17
]
[
2019
]
[
2020
34
83
83
187-205
]
[
2001
14
3
3
503-23
]
[
2017
]
[
2020
31
4
4
189-98
]
[
1996
17
17
]