1409-3871
1409-3871
S1409-38712017000200305
10.15517/lank.v17i2.30209
Ecuador
00
08
2017
00
08
2017
17
2
305
310
[
2015
177
151-74
]
[
2011
11
3
3
245-52
]
[
2016
16
219-41
]
[
2016
272
001-36
]
[
1988
26
21-106
]
[
1991
39
158-61
]
[
1992
44
126-7
]
[
1998
65
119
119
121-2
]
[
1998
72
115-7
]
[
2000
79
131
131
139
]
[
2009
30
60-1
]
[
2015
22
339-46
]