2477-9199 2477-9199 S2477-91992016000200070 10.26807/cav.v0i01.21 Ecuador 00 06 2016 00 06 2016 1 70 87

2015 24-45 1994 2013 1987 2015 2015 2006 s.f. 1997 2005 5 5 157-83 2010 2003 2000 2015 2015 14-22 2015 68-84 2015 2016