2448-654X 2448-654X S2448-654X2019000200361 10.24201/eaa.v54i2.2425 Mexico 00 08 2019 00 08 2019 54 2 361 372 2003 1977 233-70 1979 7 3 3 277-325 1986 25 4 4 296-317 2002 2007 285-306 2015 1997 1969