1990-8644 1990-8644 S1990-86442021000300208 Ecuador 00 06 2021 00 06 2021 17 80 208 215

2020 15 2 2 53-9 2020 16 75 75 93-102 2019 64 64 132-44 1999 37 3 3 33-8 2017 20 1 1 27-40 2015 9 2 2 77-88 2020 16 75 75 299-306 2016 2015 39 87-106 2017 2016 68 15 15 61-73 2017 12 12 491-512 2003 43 3 3 160-70 2006 11 4 4 363-8 2014 18 4 4 177-9 Real Academia Española 2019 2018 39 119 119 113-35 2003 14 2 2 2019 9 18 18 1-4