0185-2450 0185-2450 S0185-24502005000100161 Mexico 00 00 2005 00 00 2005 50 54 161 175 1978 1995 1981 1997 1996 1994 1998 2000 II 2000 2001 1988 2000 1995 1998 1978 2004 1985 1999 2 1990 Teorema 1999 18 3 3 2004 1995