0185-3929 0185-3929 S0185-39292008000300263 Mexico 00 00 2008 00 00 2008 29 115 263 267 2005 1983 1969 1971 2006 1994 3 45 45 213-7 1976 1 5-81 2008 2003 1990 1999 2003 2003 1984