@misc{indiciaec1c290ca0684,
  title = {Letter: ICRF 159.},
  author = {A M Creighton},
  year = {1974},
  doi = {10.1016/s0140-6736(74)92736-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4131993/},
  note = {Source identifier: 4131993}
}