@misc{indiciae6b64875148cc,
  title = {Hierarchical number estimation.},
  author = {Jay Friedenberg and William Limratana},
  year = {2004},
  doi = {10.1007/s00426-003-0169-y},
  url = {https://pubmed.ncbi.nlm.nih.gov/15597186/},
  note = {Source identifier: 15597186}
}