0188-252X
0188-252X
S0188-252X2018000200191
10.32870/cys.v0i32.6794
Ecuador
00
08
2018
00
08
2018
32
191
209
[
2006
]
[
1988
]
[
2013
77
5
5
582-603
]
[
2014
13
1-2
1-2
1-18
]
[
2008
]
[
2001
16
2-3
2-3
121-37
]
[
1972
]
[
1991
]
[
2004
]
[
2006
]
[
2007
]
[
2001
16
2-3
2-3
138-47
]
[
2002
]
[
2005
5
4
4
237-57
]
[
1935
]
[
1950
14
3
3
419-42
]
[
1990
]
[
1979
]
[
1973
]
[
1990
]
[
2011
]
[
1937
31
1
1
71-9
]
[
1980
]
[
2011
]
[
2000
1
1
1
101-12
]
[
2004
]
[
2012
]
[
2015
]
[
2015
]
[
1927
21
3
3
627-31
]
[
1935
179
187-93
]
[
2000
161-82
]
[
2004
807-23
]
[
2007
]
[
2007
5
415-36
]
[
2008
5
196-225
]
[
1991
]
[
1993
]
[
1999
4
145-72
]
[
2001
]
[
1962
]
[
2007
15
]
[
2011
78
]
[
1997
]
[
2016
13
195-212
]
[
2003
]
[
1999
]
[
2016
26
26
71-94
]
[
2017
]
[
2004
13-31
]
[
2006
7-22
]
[
1971
398
26-35
]
[
2006
]