@misc{indiciaeec821895a4d8,
  title = {Limits on spacetime foam},
  author = {Christiansen, Wayne A and Ng, Y Jack and Floyd, David J. E. and Perlman, Eric S},
  year = {2011},
  doi = {10.1103/physrevd.83.084003},
  url = {https://www.osti.gov/biblio/21541469},
  note = {Source identifier: 21541469}
}