1981-8106 1981-8106 S1981-81062015000100067 10.2015/jan.abr.v25n48.006 Brazil Brazil 00 04 2015 00 04 2015 25 48 67 79

38 2 2 373-88 16 59 59 229-58 28 100 100 989-1014 28 28 5-23 28 100 100 1231-255 20 35 35 181-99 46 46 53-9 38 134 134 305-18