1990-8644
1990-8644
S1990-86442021000600391
Ecuador
00
12
2021
00
12
2021
17
83
391
396
[
2021
16
65-72
]
[
2020
1
268-74
]
[
2013
39
4
4
1-17
]
[
2006
20
127-34
]
[
2021
31
S12-7
]
[
2021
21
2
2
127-34
]
[
2021
15
17-22
]
[
2020
75
75
103-30
]
[
2020
35
4
4
258-63
]
[
2020
41
2
2
102-14
]