Qiao, S., Xia, J., Xia, Y., Liu, Z., Liu, J. and Wang, A. (2019) “Establishment of Coal-rock Constitutive Models for Numerical Simulation of Coal-rock Cutting by Conical Picks”, Periodica Polytechnica Civil Engineering, 63(2), pp. 456-464. doi: https://doi.org/10.3311/PPci.13084.