1665-3521 1665-3521 S1665-35212005000400007 México Germany 00 00 2005 00 00 2005 18 4 7 12

[1] 1994 35 [2] 1991 44 7123 [3] 1988 38 5219 [4] 1996 54 4732 [5] 1998 282 930 [6] 1994 90 295 [7] 1999 110 243 [8] 1996 54 11305 [9] 45 [10] 1998 5 29 [11] 1999 59 2749 [12] 1998 57 9716 [13] 1997 56 210 [14] 2000 61 12946 [15] 2000 220 117 [16] 1950 80 72 [17] 2005 133 3 [18] 1987 36 4821 [19] 1983 135 284 [20] 1983 73 1759 [21] 1994 32 413 [22] 1986 [23] [24] 1975 14 220 [25] 1997 [26] 1997 650 [27] 1985 31 2163 [28] 1982 17a 64