1659-4266 1659-4266 S1659-42662018000100209 10.22458/urj.v10i1.2028 Costa Rica Costa Rica 00 06 2018 00 06 2018 10 1 209 213

2012 33 2 2 63-88 2012 2014 2013 16 1 1 109-32 La Gaceta 2002 2000 2009 2003 7 22 22 213-22 2013 2011 14 1 1 55-72