2307-0420
2307-0420
S2307-04202020000200028
10.18004/sopaci.2020.agosto.28
Ecuador
00
08
2020
00
08
2020
44
2
28
29
[
2019
12
88
88
5161-9
]
[
2013
55
6
6
483-98
]
[
2015
32
5
]
[
2013
17
455-9
]
[
2010
21
2
2
77-83
]
[
2014
148
2
2
651-6
]
[
2017
27
1
1
80-5
]
[
2017
4
97
97
771-82
]