2007-6835 2007-6835 S2007-68352021000100006 10.21041/ra.v11i1.521 Brazil 00 04 2021 00 04 2021 11 1 61 72

2015 23 3 3 2016 2015 38 4 4 573-8 Confederação Nacional dos Transportes 2017 Departamento Nacional de Infraestrutura de Transporte 2003 10 2016 2016 86 1256-64 2017 7 2 2 160-71 2016 10 3 3 20-30