2238-121X 2238-121X S2238-121X2016000300033 10.15600/2238-121X/comunicacoes.v23n3p33-53 Brazil Brazil 00 12 2016 00 12 2016 23 3 33 53

42 147 147 5 1 1 50-72 26 26 105-13 18 19-32 47 47 16 48 48