@misc{indiciae0bfc31009ecd,
  title = {Effects of acoustic waves on stick-slip in granular media and implications for earthquakes},
  author = {P.A. Johnson and H. Savage and M. Knuth and J. Gomberg and Chris Marone},
  year = {2008},
  doi = {10.1038/nature06440},
  url = {https://pubs.usgs.gov/publication/70033423},
  note = {Source identifier: 70033423}
}