1608-8921
1608-8921
S1608-89212018000300065
Cuba
Cuba
Ecuador
Cuba
00
12
2018
00
12
2018
20
3
65
77
[
2014
18
2
2
177-94
]
[
2016
]
[
2014
18
4
4
639-65
]
[
2010
25
1
1
82-94
]
[
2012
26
4
4
618-34
]
[
2013
5
2
2
19-26
]
[
2009
7-16
]
[
2017
9
5
5
204-12
]
[
Cuba. Ministerio de Educación Superior
2015
38
]
[
2017
IV
3
3
1-21
]
[
2018
V
2
2
1-26
]
[
2017
IV
3
3
1-23
]
[
2018
V
2
2
1-32
]
[
2018
La Habana
]
[
2010
8
6
6
]