1659-0775
1659-0775
S1659-07752018000200043
Ecuador
Ecuador
Ecuador
Ecuador
Ecuador
00
12
2018
00
12
2018
29
43
48
[
2011
1120-40
]
[
1997
32
9
9
6603
]
[
2016
20
2
2
77-81
]
[
2001
11
2
2
149-64
]
[
2002
55
6
6
2136
]
[
2015
17
2
2
92-106
]
[
2015
]
[
2016
]
[
2015
9
3
3
349-56
]
[
2015
17
1
1
111-25
]
[
2017
15
2
2
36-48
]
[
2002
47
2
2
106 B15
]
[
2016
38
2
2
169-86
]
[
2016
33
2
2
191-216
]
[
1998
47
5
5
2239
]
[
2002
60
5
5
25764
]
[
1991
18
4
4
2626
]
[
2016
20
4
4
702-13
]
[
2017
15
2
2
36-48
]
[
2015
17
3
3
48-55
]
[
2016
38
4
4
628-34
]
[
2013
28
^s4
^s4
4
64-71
]
[
2015
14
28
28
161-89
]
[
2016
10
54-67
]
[
2012
11
1
1
168-75
]