1815-7696
1815-7696
S1815-76962021000300715
Cuba
Cuba
Ecuador
00
09
2021
00
09
2021
19
3
715
731
[
2004
]
[
2016
63
2
2
201-6
]
[
1999
]
[
2005
151-74
]
[
2012
59
Extra 3
Extra 3
7
]
[
Ministerio de Educación Superior
2018
]
[
2020
16
258-71
]
[
2017
4
118-30
]
[
2019
]
[
2013
16
1
1
10
]
[
2010
13
1
1
]
[
1991
]
[
2017
9
4
4
19-26
]
[
2019
16
54
54
188-205
]
[
2017
29
2
2
266-83
]