TY  - RPRT
TI  - Exactly solvable hierarchical optimization problem related to percolation.
AU  - TM Fink
AU  - RC Ball
PY  - 1996
DO  - 10.1103/physrevlett.76.2827
UR  - https://pubmed.ncbi.nlm.nih.gov/10060802/
ID  - 10060802
ER  -