1405-5546 1405-5546 S1405-55462019000401241 10.13053/cys-23-4-3033 Mexico 00 12 2019 00 12 2019 23 4 1241 1247

1 1998 57 120 2 2002 88 3 1999 59 4 2000 48 965 5 2004 92 6 2010 81 7 2010 82 8 2019 9 SONY 2019 10 2000 61 11 1982 21 219 12 CODATA 2006 13 2004 14 2006 74