0120-131X 0120-131X S0120-131X2017000200453 10.18566/cueteo.v44n102.a03 Spain 00 12 2017 00 12 2017 44 102 453 467

1998 2000 1999 2013 2008 54 176-200 2016 2010 2000 1991 1991 2010 3a 2001 2000 2004 2011 1994