1809-3876 1809-3876 S1809-38762016000401377 10.23925/1809-3876.2016v14i4p1377 Brazil Brazil 00 12 2016 00 12 2016 14 4 1377 1394

240 3-13 14 2 2 164-77 27 3 3 291-312 3 1 1 29-44 11 3 3 193-220 23 81 81 143-60