TY  - RPRT
TI  - Small worlds: how and why.
AU  - N Mathias
AU  - V Gopal
PY  - 2001
DO  - 10.1103/physreve.63.021117
UR  - https://pubmed.ncbi.nlm.nih.gov/11308478/
ID  - 11308478
ER  -