1. A method for the decomposition of discontinuities in the dynamics of elastoplastic media;Abuzyarov;Zh. Vychisl Mat. Mat. Fiz.,2000
2. Basic representations of the dynamics of soils;Grigoryan;Prikl Mat. Mekh.,1960
3. Approximate solution of the problem of the penetration of a body into soil;Grigoryan;Izv. Akad. Nauk SSSR. MZhG,1993
4. Ballistic Equipment and its Use in Experimental Investigations;Zlatin,1974
5. Dynamic of a projectile penetrating sand;Allen;J. Appl. Phys.,1957