0185-1276 0185-1276 S0185-12762017000200041 10.22201/iie.18703062e.2017.111.2609 Mexico 00 12 2017 00 12 2017 39 111 41 90

79-121 2002 2007 2012 2 1980 41 41 1985 1997 1995 2011 196 196 140-65 2004 1997 162-4 2003 2009 256-61 21-41 2000 82-6 1977 7-46 2001 5-18 1998 1982 2006 1998 75-7 1983 2005 1995 132 65 65 1997 106-60 1988 225-34 2007 265-8 1989 1985 22-4 1979 1973 1999 1999 1989 7-8 1984 XVII-LIL 2001 XLIV 181 181 115-31 1991 1980 2001 2009 224-39 1977 2009 43-53 2003 1991