0187-893X 0187-893X S0187-893X2018000100008 10.22201/fq.18708404e.2018.1.63809 Costa Rica 00 00 2018 00 00 2018 29 1 110 120

2009 33 82---95 2013 4 2 2 79---90 2007 84 7 7 1090---1091 2011 4 24---30 2007 31 1 1 91-108 2011 22 3 3 240---248 2011 2015