0257-4314
0257-4314
S0257-43142018000300007
Ecuador
00
12
2018
00
12
2018
37
3
[
2008
5-7
]
[
2004
]
[
1985
]
[
2008
2
5-9
]
[
2017
5
10
]
[
1992
]
[
2002
]
[
1999
30-45
]
[
1999
]
[
2006
11-25
]
[
1993
14-8
]
[
1878
]
[
1960
]
[
2003
20
7-11
]
[
2005
2-15
]
[
2000
7-11
]
[
2004
]
[
1997
]
[
2014
]
[
1999
]
[
2004
]
[
2004
22-55
]
[
1990
]
[
2006
]
[
2003
]
[
2002
]
[
2016
21
9
]
[
1982
2
]
[
1987
]