1659-3820 1659-3820 S1659-38202018000200015 10.18845/rc.v27i2.4002 Costa Rica 00 12 2018 00 12 2018 27 2 15 24

2008 33-50 1972 2000 2009 74 29-56 2012 185-210 2003 2000 1998 11-20 2008 2005