1659-4266
1659-4266
S1659-42662020000100130
10.22458/urj.v12i1.2799
Costa Rica
Estados Unidos
México
Cuba
00
06
2020
00
06
2020
12
1
130
136
[
1991
31
163-7
]
[
2004
120
475-84
]
[
2005
53
23-8
]
[
2010
19
(10)
(10)
2873-93
]
[
2003
424
(6951)
(6951)
901
]
[
1967
]
[
2002
132
188-96
]
[
2007
94
(4)
(4)
515-25
]
[
2013
61
167-234
]
[
R Core Team
2018
]
[
2013
198
(4)
(4)
983-1000
]
[
2001
39
(2)
(2)
305-11
]
[
2013
36
(1)
(1)
3-12
]
[
2005
57
(2)
(2)
343-54
]
[
2016
8
(2)
(2)
255-8
]