0301-7036
0301-7036
S0301-70362020000400191
10.22201/iiec.20078951e.2020.203.69586
Ecuador
00
12
2020
00
12
2020
51
203
191
212
[
2007
1
1
1
]
[
2009
I
]
[
2010
]
[
2010
]
[
2004
238
]
[
2008
]
[
2010
]
[
2002
]
[
2019
]
[
2019
8
2
2
]
[
2019
83
]
[
2020
]
[
1995
]
[
2004
]
[
2018
44
6
6
]
[
2007
19
1
1
]
[
2009
39
3
3
]
[
2006
33
1
1
]
[
2006
]
[
2008
]
[
2017
]
[
1985
82
]
[
1988
]
[
1990
]
[
1992
]
[
1993
]
[
1997
65
4
4
]
[
1999
]
[
2004
10
3
3
]
[
2005
6
2
2
]
[
2007
]
[
2009
]
[
2005
6
3
3
]
[
2008
]
[
2013
]
[
2006
9
4
4
]