Bar, N. and Saroglou, C. 2020. The ARMR Classification System and the Modified Hoek-Brown Failure Criterion Compared to Directional Shear Strength Models for Anisotropic Rock Masses. Periodica Polytechnica Civil Engineering. 64, 1 (Jan. 2020), 14–19. https://doi.org/10.3311/PPci.14767.