@misc{indiciaeb6ebc08511d0,
  title = {Countable entities: developmental changes.},
  author = {E F Shipley and B Shepperson},
  year = {1990},
  doi = {10.1016/0010-0277(90)90041-h},
  url = {https://pubmed.ncbi.nlm.nih.gov/2311354/},
  note = {Source identifier: 2311354}
}