2007-7467 2007-7467 S2007-74672019000100254 10.23913/ride.v9i18.423 Peru Peru 00 06 2019 00 06 2019 9 18 254 274

2000 2005 2002 395-418 2003 19 37 37 8-10 2013 36 1 1 1-24 1985 2016 2005 2015 2012 2017 2014 2008 26 2 2 307-32 2010 2 3 3 6-17 1988