Equation of state of ductile granular materials R. G. Kraus, D. J. Chapman, P. D. Church, P. Gould, I. G. Cullis, R. Cornish and W. G. ProudDYMAT - International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading, 2 (2009) 1317-1323DOI: https://doi.org/10.1051/dymat/2009186