@misc{indiciae26e9920063a1,
  title = {Expansion-modification systems: A model for spatial 1/f spectra.},
  author = {W Li},
  year = {1991},
  doi = {10.1103/physreva.43.5240},
  url = {https://pubmed.ncbi.nlm.nih.gov/9904836/},
  note = {Source identifier: 9904836}
}