1665-3521 1665-3521 S1665-35212005000300013 Mexico Mexico 00 00 2005 00 00 2005 18 3 13 16

[1] 1998 52 99 [2] 1966 10 42 [3] 2003 21 633 [4] 2001 227 625 [5] 1999 85 208 [6] 1991 6 129 [7] 1978 32 60 [8] 2004 48 1667 [9] 1993 75 285 [10] 2002 2002 1-5 [11] 1993 140 519 [12] 1993 A 11 763 [13] 1986 29 489 [14] 1996 39 329 [15] 2004 58 1107