@misc{indiciaeff91aa5e0b91,
  title = {A problem for theory.},
  author = {P A Kolers},
  year = {1972},
  doi = {10.1016/0042-6989(72)90026-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/5037695/},
  note = {Source identifier: 5037695}
}