2007-5057 2007-5057 S2007-50572016000400268 10.1016/j.riem.2016.01.017 Mexico 00 12 2016 00 12 2016 5 20 268 277

1970 2015 97-120 2008 60 133-56 2000 75 -96 2000 17 -51 2015 149-74 2004 2004 2000 52 569-80 2008 60 337-55 2000 1993 2007 2003