1981-2582 1981-2582 S1981-25822015000300319 10.15448/1981-2582.2015.3.21771 Brazil 00 09 2015 00 09 2015 38 3 319 328

13 39 39 423-36 33 121 121 985-1002 105 2-5 71 4 4 709-33 30 107 107 585-607 53 2 2 149-55 28 100 100 1231-255 5 1 1