@misc{indiciae02d0d4b20499,
  title = {Sandpile models with and without an underlying spatial structure.},
  author = {K Christensen and Z Olami},
  year = {1993},
  doi = {10.1103/physreve.48.3361},
  url = {https://pubmed.ncbi.nlm.nih.gov/9960993/},
  note = {Source identifier: 9960993}
}