0121-1935
0121-1935
S0121-19352018000200065
10.25100/rc.v22i2.7921
Ecuador
00
12
2018
00
12
2018
22
2
65
85
[
1938
33
203
203
526-36
]
[
2003
32
5
5
687-91
]
[
2004
15
5
5
293
]
[
2016
69-82
]
[
1978
48
3
3
378-99
]
[
2004
15
300-6
]
[
1986
292
6522
6522
746-50
]
[
2010
8
2
2
145-9
]
[
1985
2nd Edition
812
]
[
1996
33
1-9
]
[
1979
1
201-36
]
[
1942
16
421-36
]
[
2004
46
2
2
175-208
]
[
1995
311
7003
7003
485
]
[
2010
2nd Edition
3
]
[
2018
42
1
1
59-72
]
[
2017
]
[
2012
9
]
[
2016
]