1390-6542
1390-6542
S1390-65422018000300080
10.29019/enfoqueute.v9n3.290
Ecuador
00
09
2018
00
09
2018
9
3
80
92
[
2014
]
[
2014
2
25
25
128-34
]
[
ANSYS
2015
]
[
2014
73
73
33-8
]
[
1997
]
[
2013
3
32
32
169-79
]
[
2006
137
137
31-8
]
[
2015
43
43
43-50
]
[
2000
41
12
12
1223-35
]
[
2008
145
145
57-63
]
[
2006
]
[
1999
]
[
2010
]
[
1994
32
8
8
1598-605
]
[
2009
]
[
2006
279-320
]
[
2010
]
[
2013
61
61
56-61
]
[
1992
]
[
2015
151
151
13-8
]
[
2013
]
[
2000
]
[
2012
]
[
2016
]
[
2015
]
[
2015
]
[
2010
41
41
489-96
]