1405-3195
1405-3195
S1405-31952018000500685
Venezuela
00
08
2018
00
08
2018
52
5
685
693
[
2015
49
513-31
]
[
1991
131
59-66
]
[
2011
62
59-68
]
[
1996
453-70
]
[
2000
]
[
2008
]
[
1998
38
776-81
]
[
1999
209
101-9
]
[
2003
255
93-104
]
[
1999
107
277-86
]
[
1999
39
725-30
]
[
2004
120
201-14
]
[
2014
221-8
]
[
2015
197
542-54
]
[
2006
]
[
2014
239
643-51
]
[
2009
314
183-96
]
[
2012
360
19-35
]
[
2012
49
167-73
]
[
2001
225-57
]
[
2015
99
21-2
]
[
2003
]
[
2006
40
27-38
]
[
2003
15
55-64
]
[
SAS Institute
2004
]
[
1985
85
153-62
]
[
2005
69
215-26
]
[
1994
126
707-13
]
[
2003
67
387-401
]
[
2012
110
259-70
]
[
2001
60
35-42
]
[
2001
24
233-42
]
[
2004
68
1403-9
]
[
1995
172
181-7
]