@misc{indiciae995c8bd44309,
  title = {Self-diffusion in dense granular shear flows.},
  author = {Brian Utter and R P Behringer},
  year = {2004},
  doi = {10.1103/physreve.69.031308},
  url = {https://pubmed.ncbi.nlm.nih.gov/15089287/},
  note = {Source identifier: 15089287}
}