2477-9105
2477-9105
S2477-91052019000100012
10.47187/perf.v2i22.49
Ecuador
00
12
2019
00
12
2019
2
22
12
19
[
1991
434-45
]
[
1995
43-5
]
[
1966
42-5
]
[
1993
58
]
[
1998
451-66
]
[
2000
1217-9
]
[
1995
6
41-4
]
[
1993
20-8
]
[
2007
83
]
[
2000
48
]
[
2000
44
]
[
2001
48
]
[
1991
3
]
[
2007
35-8
]
[
1986
280
]
[
1998
15-9
]
[
1973
18-25
]
[
1978
153-74
]
[
2005
38
]
[
2001
49
]
[
2001
49
]
[
1998
63
]