2477-9105
2477-9105
S2477-91052019000100004
10.47187/perf.v2i22.48
Ecuador
00
12
2019
00
12
2019
2
22
4
11
[
1976
]
[
2006
]
[
1997
85-106
]
[
2017
4
10
10
420-8
]
[
1992
]
[
2008
]
[
2006
]
[
1993
]
[
2019
3
19
19
]
[
2017
98-113
]
[
2010
13
4-II
4-II
373-85
]
[
2002
13
2
2
645-75
]
[
2007
53
1
1
56-66
]
[
2016
30
68
68
51-64
]
[
2009
2009
España
]