1990-8644 1990-8644 S1990-86442018000300075 Cuba República del Ecuador 00 06 2018 00 06 2018 14 63 75 84

(201 4 5 6 6 (199 0) (201 4) 5, 6 6 (199 5) 137-225 (201 0) (200 3) (199 0) 51-78 (200 8) (200 0) (200 8) (199 9) (199 2) 2016 (199 9) (198 9) (201 0) (201 3) (200 4) (201 0)