1405-3195
1405-3195
S1405-31952007000700743
Mexico
Mexico
Mexico
00
11
2007
00
11
2007
41
7
743
753
[
1985
164
207-14
]
[
1992
84
755-62
]
[
1995
40
275-81
]
[
2001
103
817-26
]
[
1996
149
363-71
]
[
1997
50
57-65
]
[
2001
65
45-56
]
[
1997
17
73-6
]
[
1975
18
659-68
]
[
2000
23
1015-9
]
[
1985
165
322-32
]
[
2003
39
524-31
]
[
1994
25
50-65
]
[
2003
37
451-65
]
[
1995
85
35-44
]
[
1962
15
473-97
]
[
1997
]
[
2001
20
721-30
]
[
2004
40
342-5
]
[
SAS Institute
2000
]
[
2003
]
[
1997
3a
]
[
1991
289
265-6
]
[
1985
127
1-8
]