1886-5887
1886-5887
S1886-58872021000200006
10.1344/rbd2021.52.34162
España
Ecuador
00
00
2021
00
00
2021
52
85
104
[
2013
13
1
1
]
[
2011
6
4
4
327-35
]
[
2011
84
2
2
152-62
]
[
2019
]
[
2010
]
[
2019
28
3
3
415-21
]
[
2014
4
3
3
]
[
Ucuenca.edu.ec
2021
]
[
2015
5
4
4
41
]
[
2020
50
50
81-98
]
[
2001
23
3
3
245-51
]
[
2021
]
[
2020
15
2
2
106-11
]
[
2009
31
4
4
328-31
]
[
2020
20
]
[
2012
61
5
5
322-35
]
[
2003
78
8
8
802-9
]
[
2016
22
22
10-1
]
[
2016
264-9
]
[
2018
20
1
1
3-11
]
[
2010
138
8
8
]
[
2015
13
1
1
76-87
]
[
2006
28
5
5
e127-34
]
[
2018
30
2
2
]
[
2011
83
3
3
472-7
]
[
2010
11
3
3
208-11
]
[
2010
11
3
3
208-11
]
[
2016
3rd
]
[
2014
5
5
212-8
]
[
2012
5
1
1
]
[
2007
65
3
3
586-98
]
[
2014
32
32
104-15
]