2393-6606
2393-6606
S2393-66062017000200025
10.22235/ech.v6iespecial.1447
Chile
00
10
2017
00
10
2017
6
spe
25
30
[
2014
]
[
1993
]
[
1988
43
1
1
49-55
]
[
2001
2
1
1
1-14
]
[
1984
79-88
]
[
1981
30-62
]
[
2016
9
4
4
472-88
]
[
2014
22
1
1
27-31
]
[
2011
19
1
1
12-6
]
[
2011
26
293-305
]
[
2015
]
[
1988
10
2
2
163-79
]
[
2008
]
[
2006
16
6
6
853-71
]
[
2015
34
2
2
199-212
]
[
1999
]
[
2013
18
12-45
]