@misc{indiciae97b4639a5c3d,
  title = {Exactly solvable hierarchical optimization problem related to percolation.},
  author = {TM Fink and RC Ball},
  year = {1996},
  doi = {10.1103/physrevlett.76.2827},
  url = {https://pubmed.ncbi.nlm.nih.gov/10060802/},
  note = {Source identifier: 10060802}
}