1. The theory of indentation and hardness tests;Bishop;Proc Phys Soc,1945
2. A theory of earth movement near a deep underground explosion. Memo No. 21-48, Armament Research Establishment;Hill,1948
3. Dynamic expansion of spherical cavities in metals;Hopkins,1960
4. On the mechanics of indentation and cratering in solid targets of strain-hardening metals by impact of hard and soft sphere;Goodier,1965
5. Penetration into soil targets;Forrestal;Int J Impact Eng,1992