1390-0129 1390-0129 S1390-01292019000500035 10.33333/rp.vol44n2.04 Ecuador 00 01 2019 00 01 2019 44 2 35 42

2017 2006 5 47-51 2001 M.1225, R. I.-R. 1997 2013 15 1567-92 2014 2015 2017