1990-8644
1990-8644
S1990-86442020000600154
Ecuador
00
12
2020
00
12
2020
16
77
154
161
[
2017
8
4
4
1-8
]
[
2018
21
2
2
105-29
]
[
2014
49
49
]
[
2017
61
61
]
[
2016
10
1
1
77-83
]
[
2015
]
[
2017
5
5
6-25
]
[
2017
39
155
155
38-50
]
[
2012
]
[
2012
87
7
7
877-82
]
[
2013
40
2
2
711-26
]
[
2016
8
16
16
273-83
]
[
2018
10
1
1
]
[
2017
11
2
2
59-64
]
[
2016
]
[
2011
42
2
2
71-3
]
[
2017
11
42
42
48-66
]