2238-121X 2238-121X S2238-121X2016000200053 10.15600/2238-121X/comunicacoes.23n2p53-68 Brasil 00 05 2016 00 05 2016 23 2 53 68

15 15 95-111 33 119 119 577-91 17 17 59-77 32 55-75 32 17-35 32 77-97 32 99-117 32 37-53 30 269-91 32 119-37