@misc{indiciaed997e945d5ac,
  title = {Reference in single sentences and in texts.},
  author = {R A Crawley and R J Stevenson},
  year = {1990},
  doi = {10.1007/bf01077416},
  url = {https://pubmed.ncbi.nlm.nih.gov/2231478/},
  note = {Source identifier: 2231478}
}