0257-4314
0257-4314
S0257-43142020000300015
Ecuador
00
12
2020
00
12
2020
39
3
[
2007
]
[
2009
]
[
2017
]
[
2002
9
1
1
64-76
]
[
2009
10
1
1
53-69
]
[
2005
10
1
1
34-43
]
[
2001
1
1
1
55-86
]
[
1998
46
2
2
157-82
]
[
1990
35
1
1
128-52
]
[
2000
]
[
1997
30
3
3
374-84
]
[
1981
18
1
1
93-50
]
[
2015
45
1
1
107-25
]
[
2019
138
261-78
]
[
2001
18
1
1
185-214
]
[
2010
]
[
2001
97-123
]
[
2005
58
6
6
715-25
]
[
1996
39
1
1
123-40
]
[
2011
3
544-9
]
[
2019
94
320-34
]
[
2007
85
7
7
]
[
2010
]
[
2010
18
8
8
1267-83
]
[
2012
15
30
30
43-8
]
[
1992
]
[
2006
5
3
3
153-69
]
[
2009
15
3
3
135-48
]
[
2017
38
2
2
111-6
]
[
2012
31
3-4
3-4
231-40
]