@misc{indiciae56078e1961ea,
  title = {Back to the future.},
  author = {R E Helfer},
  year = {1987},
  doi = {10.1016/0145-2134(87)90028-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/3828864/},
  note = {Source identifier: 3828864}
}