1. A discrete numerical model for granular assemblies
2. Micro-mechanics of Granular Materials, Proceedings of US/Japan Seminar, October 26–30, 1987;Cundall,1988
3. Micromechanics of Granular Materials;Kishino,1988
4. P.A. Serrano, J.M. Rodiriguez-Ortiz, in: Proceedings of Symp. Placticity and Soil Mechanics, Cambridge, 1973, p. 215
5. Contact Mechanics;Johnson,1985