Penetration of a projectile by impact into a granular medium
A. Seguin, Y. Bertho and P. Gondret, Traffic and Granular Flow '07, C. Appert-Rolland, F. Chevoir, P. Gondret, S. Lassare, J.-P. Lebacque and M. Schreckenberg (Eds.), Springer Berlin Heidelberg, Orsay, France (2009)