1981-2582 1981-2582 S1981-25822016000300412 10.15448/1981-2582.2016.3.22257 Spain 00 09 2016 00 09 2016 39 3 412 420

18 2 2 215-28 3 3 49-62 32 4 4 601-16 31 1 1 45-56 37 37 123-38 9 2 2 100-12 1 2 2 117-30