@misc{indiciae8ff30786c4dc,
  title = {Small worlds: how and why.},
  author = {N Mathias and V Gopal},
  year = {2001},
  doi = {10.1103/physreve.63.021117},
  url = {https://pubmed.ncbi.nlm.nih.gov/11308478/},
  note = {Source identifier: 11308478}
}