0121-0807
0121-0807
S0121-08072020000200101
10.18273/revsal.v52n2-2020004
Mexico
USA
00
06
2020
00
06
2020
52
2
101
109
[
United Nations
2013
]
[
2015
]
[
2001
42
43
43
37-53
]
[
2017
57
2
2
153-62
]
[
1991
1
1
1
21-38
]
[
2003
362
9396
9396
16671671
]
[
2015
dyu263
]
[
2009
]
[
2011
17
67
67
209-50
]
[
2015
]
[
2008
23
12
12
1973-80
]
[
2012
]
[
2014
]
[
2011
2011
420714
]
[
2010
]
[
2010
10
1
1
104
]
[
1999
39
1
1
59-65
]
[
2009
64B
3
3
390-401
]
[
2006
61
3
3
262-6
]
[
1997
92
440
440
1375-86
]
[
2004
19
4
4
359364
]
[
2004
]
[
2014
]
[
2007
49
s4
s4
S59-66
]
[
2015
57
^s1
^s1
1
s62-s9
]
[
1963
185
12
12
914919
]
[
1970
19
3
3
278
]
[
2004
82
4
4
251-8
]
[
2012
74
3
3
211-29
]
[
2009
50
2
2
158-69
]
[
1977
1
3
3
385-401
]
[
2009
47
3
3
286-94
]
[
2002
29
1
1
81-117
]
[
2007
22
1
1
1-11
]
[
2002
20
1
1
36-43
]
[
1999
55
3
3
839845
]
[
2000
24
6
6
882-91
]
[
2004
]
[
2002
]
[
2001
88
3
3
767-78
]
[
1978
6
2
2
461-4
]
[
1987
52
3
3
333-43
]