Zhang, L., and Einstein, H.H. (2004). Using RQD to estimate the deformation modulus of rock masses. International Journal of Rock Mechanics and Mining Sciences, 41 (2), 337-341. doi:10.1016/S1365-1609(03)00100-X
Zhang, L., and Einstein, H.H. (2004). Using RQD to estimate the deformation modulus of rock masses. International Journal of Rock Mechanics and Mining Sciences, 41 (2), 337-341. doi:10.1016/S1365-1609(03)00100-X