1405-9193
1405-9193
S1405-91932021000200179
10.22201/iij.24484881e.2021.45.16661
Ecuador
00
12
2021
00
12
2021
45
179
204
[
2017
]
[
2017
]
[
2018
30
1
1
1-23
]
[
2011
]
[
1991
]
[
2001
EE UU
]
[
2011
133
3-20
]
[
2011
16
2
2
167-87
]
[
2007
102-24
]
[
1984
46
02
02
556-71
]
[
1963
]
[
2014
222
369-90
]
[
1984
]
[
1995
14
4
4
417-39
]
[
1987
]
[
2020
4
4
]
[
2018
]
[
2017
]
[
1957
]
[
1980
42
267-76
]
[
1971
33
1
1
25-56
]
[
2016
1
42
42
99
]
[
2019
]
[
2010
]
[
2019
81
31-49
]
[
1995
89
1
1
121-36
]
[
2010
]
[
1993
55
3
3
765-76
]
[
2000
]
[
2011
]
[
2003
4
3-30
]
[
2017
91
91
85-116
]
[
2006
41
1
1
133-52
]
[
1997
22
4
]
[
2019
]
[
2011
18
2
2
231-64
]
[
1984
63
1
1
547-85
]
[
1999
]
[
2015
167
167
99-132
]
[
2013
]
[
2013
5
3
3
73-95
]
[
2019
]
[
2009
]
[
1993
55
3
3
793-805
]
[
2003
]
[
1966
]
[
2019
24
5-26
]
[
1969
13
3
3
439-54
]
[
1988
65-82
]
[
2016
]
[
1998
]
[
2010
]
[
2010
480
]