2631-2786
2631-2786
S2631-27862020000300037
10.35290/rcui.v7n3.2020.303
Ecuador
Venezuela
Venezuela
00
12
2020
00
12
2020
7
3
37
50
[
2013
36
110-33
]
[
2017
2
7
7
1-12
]
[
2003
]
[
2018
3
2
2
18- 25
]
[
2009
12
3
3
333-54
]
[
2007
]
[
1988
]
[
2006
20
165-93
]
[
2007
2
2
2
50-71
]
[
2013
]
[
2013
19
3
3
74-85
]
[
2018
]
[
2006
]
[
2005
8
3
3
255-81
]
[
1986
15
2
2
4-14
]
[
1987
57
1
1
1-23
]
[
2019
]