TY  - RPRT
TI  - Stress field in granular systems: loop forces and potential formulation.
AU  - Robin C Ball
AU  - Raphael Blumenfeld
PY  - 2002
DO  - 10.1103/physrevlett.88.115505
UR  - https://pubmed.ncbi.nlm.nih.gov/11909410/
ID  - 11909410
ER  -