1390-6542
1390-6542
S1390-65422019000200039
10.29019/enfoqueute.v10n2.469
Ecuador
Ecuador
Ecuador
Ecuador
Ecuador
00
06
2019
00
06
2019
10
2
39
51
[
1997
1-88
]
[
2017
490-509
]
[
2015
615-27
]
[
2016
1-17
]
[
2014
479-88
]
[
2017
90
1
1
1-11
]
[
2014
5
1
1
]
[
2018
110-9
]
[
2012
25
3
3
70-80
]
[
2011
54
5-6
5-6
1198-209
]
[
2016
575-93
]
[
2017
84
120-33
]
[
2015
242-52
]
[
2017
204-12
]
[
2016
847-56
]
[
2016
490-5
]
[
2013
57
1
1
147.153
]
[
2015
138-58
]
[
2018
383-400
]
[
2017
7
2
2
69
]