1409-3871
1409-3871
S1409-38712018000300231
10.15517/lank.v18i3.35605
Ecuador
Ecuador
00
12
2018
00
12
2018
18
3
231
237
[
2017
17
2
2
305-10
]
[
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
158
161
]
[
1992
44
126-7
]
[
1993
46
80-1
]
[
1998
65
119
119
121-2
]
[
1998
72
115-7
]
[
2000
79
131
131
139
]
[
2009
30
1
1
19-20
]
[
2001
88
12
12
2286-308
]
[
2015
22
339-46
]