TY  - RPRT
TI  - Density patterns in two-dimensional hoppers.
AU  - GH Risto
AU  - HJ Herrmann
PY  - 1994
DO  - 10.1103/physreve.50.r5
UR  - https://pubmed.ncbi.nlm.nih.gov/9962016/
ID  - 9962016
ER  -