0377-9424
0377-9424
S0377-94242021000100177
10.15517/rac.v45i1.45769
Venezuela
Ecuador
Venezuela
Venezuela
00
06
2021
00
06
2021
45
1
177
192
[
2015
33
1
1
51-62
]
[
2015
14
2
2
157-62
]
[
2010
44
5
5
575-86
]
[
2018
10
1
1
170-89
]
[
2018
30
2
2
117-24
]
[
2015
6
1
1
217-22
]
[
2004
13
96-105
]
[
2014
6
]
[
2013
176
5
5
809-17
]
[
2008
1
39-45
]
[
2019
205-12
]
[
2017
7
3
3
45-50
]
[
2009
17
207
207
42-7
]
[
2015
65
139-64
]
[
2013
45
21-5
]
[
2018
59
]
[
2012
108
]
[
2018
(
SPE20
SPE20
4331-41
]
[
2018
]
[
1983
28
]
[
2010
1
2
2
166-71
]
[
2013
2
2
2
9-64
]
[
2018
11
1
1
32-6
]
[
2014
26
3
3
143-52
]
[
2011
13
1
1
49-52
]
[
2008
310
310
151-65
]
[
2012
46
3
3
267-78
]
[
1994
34
721-7
]
[
2016
6
2
2
258-61
]
[
2016
7
1
1
185-94
]
[
2014
32
3
3
231-9
]
[
2012
89
]
[
1978
28
4
4
347-61
]
[
2019
19
32
32
41-7
]
[
2017
2
106-20
]
[
2001
101
]
[
2009
53
]
[
2004
]
[
2010
59
]
[
2007
57
1
1
7-14
]
[
2008
26
62-70
]
[
2008
570
]
[
2011
22
2
2
281-95
]
[
2018
29
1
1
153-5
]
[
2018
29
1
1
207-19
]
[
2016
3
5
5
98-102
]
[
2011
55
]
[
2018
7
29-40
]
[
1984
١٢٠
]
[
2018
96
54-9
]
[
2018
36
1
1
49-59
]
[
2013
4
5
5
727-38
]
[
2016
9
2
2
1-10
]
[
2015
123
]
[
2008
58
1
1
41-3
]