2007-9028 2007-9028 S2007-90282017000200243 10.19136/era.a4n11.1172 Mexico Mexico 00 08 2017 00 08 2017 4 11 243 253

2012 38 245-52 1995 36 1043-6 1996 46 413-29 1998 49 201-3 2006 40 765-72 2012 102 583-8 2006 99 1550-64 1997 5 103-8 2001 6 79-155 2005 95 115-23 1998 1997 23 1145-61 1999 2nd 1987 13-14 33-42 2015 7 161-6 2004 9 636-44 2009 29 171-9 2001 30/2001 30/2001 1998 2012 2014 48 819-32 1996 83 280-2 2006 5 720-4 2011 1 2nd 2012 361-400 2003 2009 35 111-7 1998 17 581-9 SAS Institute Inc 2009 Second 1992 114 439-54 2002 22 241-61 2005 129 265-71 2007 53 127-37 2003 2010 Fifth