@misc{indiciaee2c43dc2b102,
  title = {The unbreakable stone.},
  author = {B C Powers},
  year = {1987},
  doi = {10.1016/0090-4295(87)90194-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/3617308/},
  note = {Source identifier: 3617308}
}