2227-1899
2227-1899
S2227-18992021000100001
Cuba
Cuba
Angola
Cuba
00
03
2021
00
03
2021
15
1
1
19
[
2018
14
65-72
]
[
2009
5
36
36
9135-49
]
[
2016
10
]
[
2017
12
2
2
122-35
]
[
2015
39-48
]
[
2015
]
[
2000
8
Fuzzy Set
Fuzzy Set
746-52
]
[
Ihobe
2017
]
[
2017
84
199-206
]
[
2016
132-41
]
[
2019
]
[
2009
]
[
2016
20
50
50
69-84
]
[
2020
]
[
2017
8
3
3
106-13
]
[
2019
]
[
2015
]
[
1965
8
3
3
Pp. 338-53
]
[
1996
8
2
2
421-9
]
[
2020
145
]
[
2014
]
[
2016
40
1402-17
]