@misc{indiciaee7517ec104ab,
  title = {Sound in sand.},
  author = {Ch Liu and SR Nagel},
  year = {1992},
  doi = {10.1103/physrevlett.68.2301},
  url = {https://pubmed.ncbi.nlm.nih.gov/10045360/},
  note = {Source identifier: 10045360}
}