0121-246X
0121-246X
S0121-246X2016000100281
10.17533/udea.rfo.v27n2a3
Ecuador
Ecuador
00
01
2016
00
01
2016
27
2
281
295
[
2008
2
]
[
2003
28
1
1
60-6
]
[
2000
16
4
4
285-91
]
[
2009
4
]
[
2004
32
6
6
495-501
]
[
2003
31
6
6
437-44
]
[
2007
]
[
2001
92
2
2
23-8
]
[
2011
4
3
3
106-9
]
[
2011
41
595-600
]
[
2007
8
2
2
11-3
]
[
2002
27
3
3
218-22
]
[
2006
31
1
1
60-7
]
[
2003
134
12
12
1621-9
]
[
2004
32
5
5
407-12
]
[
2005
93
3
3
235-9
]
[
2012
50
2
2
]
[
2005
36
3
3
177-82
]
[
2000
14
2
2
107-11
]
[
2004
20
2
2
85-94
]
[
2005
2
]
[
2003
8
4
4
363-75
]