1665-5346
1665-5346
S1665-53462021000200001
10.21919/remef.v16i2.587
U.S.A.
Mexico
00
06
2021
00
06
2021
16
2
[
1994
4
1
1
52-62
]
[
1991
47
4
4
52-9
]
[
1979
3
2
2
133-55
]
[
1985
5
2
2
363-84
]
[
1996
6
4
4
379-406
]
[
1979
20
3
3
381-408
]
[
1990
25
4
4
419-440.
]
[
1992
60
1
1
77-105
]
[
1986
41
5
5
1129-42
]
[
1990
3
4
4
573-92
]
[
1980
35
1
1
71-97
]
[
1992
47
4
4
1259-82
]
[
1989
23
2
2
195-224
]
[
1938
]
[
1971
44
1
1
19-31
]
[
1987
60
4
4
473-89
]
[
2020
30
2
2
76-85
]
[
1982
37
2
2
339-48
]
[
1977
5
2
2
177-88
]
[
2015
]
[
2002
59
274
274
227-50
]
[
2002
17
2
2
171-92
]
[
2003
129-130
129-130
3-17
]
[
2008
2da
]