1405-3322 1405-3322 S1405-33222016000300553 Mexico 00 12 2016 00 12 2016 68 3 553 570

2001 1989 3 47-64 2002 35 2279-301 2011 29 961-75 2005 82 119-26 1967 19-22 2004 2012 1995 1999 2006 313 504-7 2001 179-203 1991 4 251-7 2014 9 149-56 2006 87 141-8 2002 66 233-9 1969 1974 1993 1943 7 115-33 1984 2013 PDP Research Group 1986 216-71 1969 26-56 1979 XXXI 2 2 67-96 1978 2008 2009 2009 1970 234-40 2012 71 215-9 1994