1. Impact Strength of Materials;Johnson,1972
2. The mechanics of penetration of projectiles into targets;Backman;Int. J. Engng Sci.,1978
3. Hole flanging and punching of circular plates with conically headed cylindrical punches;Johnson;Inst. Mech. Engrs J. Strain Analysis,1973
4. Piercing and hole-flanging of sheet metals: a survey;Johnson;Memoires Scientifiques Revue Metallurgie,1980
5. Quasi-static and dynamic perforation of thin aluminium plates;Ghosh;Aluminium,1980