BREUL, Pierre; SAUSSINE, Gilles. On site mechanical characterization of the ballast state. Periodica Polytechnica Civil Engineering, [S. l.], v. 55, n. 1, p. 31–38, 2011. 10.3311/pp.ci.2011-1.04. Disponível em: https://pp.bme.hu/ci/article/view/470. Acesso em: 22 jul. 2024.