1665-8027 1665-8027 S1665-80272006000200133 10.29043/liminar.v4i2.217 Mexico 00 12 2006 00 12 2006 4 2 133 137 2004 25 1 1 2005 46 1 1 83-106 2006 47 5 5 20-1 1922 1895 1998 2004 2001