VÁSÁRHELYI, Balázs; KOVÁCS, Dorottya. Empirical methods of calculating the mechanical parameters of the rock mass. Periodica Polytechnica Civil Engineering, [S. l.], v. 61, n. 1, p. 39–50, 2017. 10.3311/PPci.10095. Disponível em: https://pp.bme.hu/ci/article/view/10095. Acesso em: 26 dec. 2024.