1657-4206
1657-4206
S1657-42062018000200058
10.17230/ecos.2018.47.3
00
12
2018
00
12
2018
22
47
58
72
[
]
[
2014
]
[
2009
36
1-37
]
[
2012
40
1
1
8-34
]
[
2009
]
[
2001
]
[
1980
88
3
3
588-606
]
[
2005
26
1
1
119-35
]
[
2009
34
]
[
2008
30
3
3
541-58
]
[
2010
]
[
2003
]
[
2005
]
[
1972
40
6
6
979-1001
]
[
2010
]
[
1982
19
4
4
404-16
]
[
2009
62
3
3
1-21
]
[
1996
1
2
2
130-49
]
[
2014
]
[
2015
16
2
2
121-43
]
[
2001
64
64
]
[
2018
6
9
9
15-30
]
[
2006
40
]
[
2005
33
1
1
55-74
]
[
2009
98
7-34
]
[
2018
52
7
7
]
[
2015
]