0187-5779
0187-5779
S0187-57792011000300277
Mexico
USA
Mexico
00
09
2011
00
09
2011
29
3
277
285
[
2008
]
[
2002
]
[
2008
Belgium
]
[
2008
8
57-82
]
[
2007
44
85-108
]
[
2007
]
[
2007
11
12-23
]
[
2005
]
[
2009
]
[
2006
]
[
Pemex (Petróleos Mexicanos)
2009
]
[
Pemex (Petróleos Mexicanos)
2009
]
[
2008
53
349-56
]