TY  - RPRT
TI  - Numerical simulation of a sphere moving down an incline with identical spheres placed equally apart
AU  - Chi-Hai Ling
AU  - Chyan-Deng Jan
AU  - Cheng-lung Chen
AU  - Hsieh Wen Shen
PY  - 1992
UR  - https://pubs.usgs.gov/publication/70017189
ID  - 70017189
ER  -