1990-8644
1990-8644
S1990-86442019000400201
Ecuador
00
12
2019
00
12
2019
15
69
201
208
[
1999
]
[
2016
10
23-32
]
[
2014
6
1
1
166-72
]
[
2002
]
[
2013
]
[
2016
1
33
33
]
[
2016
20
6
6
834-44
]
[
2000
]
[
2007
10
2
2
190-2
]
[
2018
6
]
[
2006
]
[
2003
17
3
3
]
[
2013
]
[
2008
12
1
1
156-80
]
[
2009
9
1
1
]
[
2014
24
347-60
]
[
2015
2
8
8
29-40
]
[
2014
]
[
2014
]
[
2014
6
1
1
7-20
]