2631-2654
2631-2654
S2631-26542019000200068
10.37135/unach.ns.001.04.07
Ecuador
00
11
2019
00
11
2019
2
2
68
74
[
2018
1
1
1
23-32
]
[
2015
]
[
2015
]
[
2013
]
[
2006
]
[
2013
458-60
]
[
2014
]
[
2013
]
[
2017
78
282
282
257
]
[
2015
]
[
2014
]
[
2018
557
7707
7707
651-9
]
[
2015
]
[
2017
148
773-84
]
[
2015
]
[
2018
July
1-8
]
[
2007
160
2
2
115-21
]
[
2009
16
]