@misc{indiciae646a156fee94,
  title = {First words.},
  author = {W H Perkins},
  year = {2001},
  doi = {10.1126/science.293.5529.426a},
  url = {https://pubmed.ncbi.nlm.nih.gov/11464845/},
  note = {Source identifier: 11464845}
}