0366-5232
0366-5232
S0366-52322014000200008
10.15446/caldasia/v36n2.47487
Colombia
Colombia
USA
00
12
2014
00
12
2014
36
2
289
304
[
1995
]
[
2008
]
[
1995
XII+572
]
[
1978
3
3rd Edn
101-136
]
[
2000
56
961-973
]
[
1992
Six Edition
187-202
]
[
1996
2nd edition
513-522
]
[
2001
815-826
]
[
1992
4
117-120
]
[
1988
472-485
]
[
2008
Fourth Edition
687-7221158
]
[
2008
Fourth Edition
747-7711158
]
[
1977
V
79-108
]
[
1927
XLIII
311-428
]
[
1987
2
690-915975
]
[
1981
V
147-174
]
[
2008
10
17-27
]
[
2000
66
400
]
[
1999
65
884-887
]
[
2001
4
1
1
9
]
[
1950
19
36-58
]
[
1980
17
411-429
]
[
1995
42
129-141
]
[
2003
324-340
]
[
1981
19
189-203
]
[
1981
1
59-67
]
[
1978
12
253-256
]
[
1983
167-179
]
[
1971
152
1-105
]
[
R Development Core Team
2013
]
[
1971
348
]
[
1996
217
]
[
1998
46
783-789
]
[
2001
18
459-467
]
[
2001
35
37-50
]
[
2003
20
487-496
]
[
2004
6
175-182
]
[
2005
15
83-93
]
[
2006
8
1-8
]
[
2008
10
55-62
]
[
2008
31
1
1
67-75
]
[
2009
32
2
2
77-87
]
[
2010
58
339-356
]
[
2010
60
99-105
]
[
2013
61
1365-1387
]
[
1995
Third
]
[
1997
7
45-83
]
[
1972
136- 179
]
[
1996
169
]
[
1989
81
225-241
]
[
1992
49
2196-2218
]