2631-2654
2631-2654
S2631-26542019000200017
10.37135/unach.001.04.02
Ecuador
00
11
2019
00
11
2019
2
2
17
29
[
2018
18
7
7
1-23
]
[
2017
52-8
]
[
2014
]
[
2012
171-9
]
[
2012
]
[
2017
]
[
2015
]
[
2019
]
[
2019
]
[
2018
]
[
2016
5
1
1
22-31
]
[
2016
]
[
2018
]
[
2019
]
[
2018
6
2
2
637-55
]
[
2015
]
[
2004
]
[
2018
]
[
2012
1
2
2
315-20
]
[
2017
]
[
2012
291-309
]
[
2015
]
[
2017
21
1
1
08-18
]
[
2019
20
3
3
303-7
]
[
2009
13
3
3
1-9
]