1390-8618
1390-8618
S1390-86182017000100137
10.17163/ret.n13.2017.05
Ecuador
Ecuador
00
09
2017
00
09
2017
7
13
137
151
[
2013
]
[
2011
1
2
2
19-37
]
[
2012
2
3
3
69-94
]
[
2011
102-11
]
[
2014
2
9
9
31-40.
]
[
2001
]
[
2014
23
3
3
300-10
]
[
2013
]
[
2013
]
[
2012
]
[
EKOS
2013
]
[
EKOS
2014
]
[
2013
]
[
2002
]
[
2013
23
47
47
41-52
]
[
2009
18
3
3
99-114
]
[
2013
]
[
2011
5
2
2
19-42.
]
[
2013
]
[
2013
]
[
2013
]
[
2013
]
[
2012
]