1870-2171
1870-2171
S1870-21712020000200111
10.29201/pe-ipn.v16i31.232
Mexico
00
12
2020
00
12
2020
16
31
111
137
[
2009
44
2
2
182-98
]
[
2017
9
10
10
1-34
]
[
2010
17
13
13
1323-8
]
[
2017
49
25
25
2409-27
]
[
2001
32
245-68
]
[
1986
31
3
3
307-27
]
[
2013
52
3
3
1-27
]
[
2016
6
1
1
83-114
]
[
2012
11
3
3
231-70
]
[
2009
7
4
4
437-80
]
[
1997
19
2
2
285-304
]
[
2000
]
[
1999
9
1
1
79-93
]
[
2014
64
2
2
144-59
]
[
1982
50
4
4
987-1007
]
[
1998
93
441
441
359-71
]
[
1993
48
5
5
1779-801
]
[
2016
24
3
3
763-86
]
[
1997
]
[
2011
34
7
7
1088-105
]
[
2015
33
3
3
535-49
]
[
2001
56
2
2
649-76
]
[
2013
22
2
2
341-55
]
[
2016
31
1
1
3-14
]
[
1999
]
[
2008
43
3
3
787-815
]
[
2016
5
5
5
761-80
]
[
2001
]
[
2006
21
2
2
143-73
]
[
2006
47
2
2
527-55
]
[
2007
14
3
3
401-23
]
[
2018
63
4
4
1-20
]
[
1959
8
229-31
]
[
2018
18
11
11
1831-49
]
[
2005
2
]
[
2018
11
4
4
289-300
]
[
1994
18
5
5
931-55
]