1607-050X 1607-050X S1607-050X2019000200210 10.29340/60.2101 Mexico 00 08 2019 00 08 2019 60 210 213 1989 449-85 1976 2002 111-20 1997 2010 2002 32-41 1999 9 9 15-31 2006 2010 21-38