0301-7036
0301-7036
S0301-70362018000300169
10.22201/iiec.20078951e.2018.194.61587
Colombia
00
09
2018
00
09
2018
49
194
169
190
[
1990
]
[
1962
10
2
2
]
[
1984
]
[
1985
75
2
2
]
[
1980
14
2
2
]
[
1979
]
[
1969
]
[
1981
15
4
4
]
[
1969
]
[
1983
17
2
2
]
[
1952
19
73
73
]
[
1952
19
74
74
]
[
1952
19
75
75
]
[
2008
]
[
2003
79
79
]
[
2009
]
[
2006
]
[
1981
13
13
]
[
1981
]
[
2006
]
[
2005
]
[
1982
]
[
1989
23
2
2
]
[
1982
16
3
3
]
[
1987
21
4
4
]
[
2006
]