@misc{indiciae708190621f4d,
  title = {Feature frequency in concept learning: What is counted?},
  author = {R T Kellogg},
  year = {1981},
  doi = {10.3758/bf03202330},
  url = {https://pubmed.ncbi.nlm.nih.gov/7242329/},
  note = {Source identifier: 7242329}
}