@misc{indiciae5ec489319b22,
  title = {Materials: Ultrahard polycrystalline diamond from graphite.},
  author = {Tetsuo Irifune and Ayako Kurio and Shizue Sakamoto and Toru Inoue and Hitoshi Sumiya},
  year = {2003},
  doi = {10.1038/421599b},
  url = {https://pubmed.ncbi.nlm.nih.gov/12571587/},
  note = {Source identifier: 12571587}
}