@misc{indiciae4c6f01bae3c2,
  title = {Does gravity change with time?},
  author = {G Gamow},
  year = {1967},
  doi = {10.1073/pnas.57.2.187},
  url = {https://pubmed.ncbi.nlm.nih.gov/16591449/},
  note = {Source identifier: 16591449}
}