1390-6542
1390-6542
S1390-65422018000400077
10.29019/enfoqueute.v9n4.402
Colombia
00
12
2018
00
12
2018
9
4
77
87
[
2015
205-11
]
[
2014
6
4
4
327-63
]
[
2015
62
6
6
3757-67
]
[
2015
62
6
6
3757-67
]
[
2011
]
[
2017
70
512 - 520
]
[
2013
61
751 - 760
]
[
2009
]
[
2015
52
294 - 301
]
[
2013
]
[
2017
1614-9
]
[
2007
]