@misc{indiciae57c7ff72a09b,
  title = {Electron spin resonance in graphite.},
  author = {K Matsubara and T Tsuzuku and K Sugihara},
  year = {1991},
  doi = {10.1103/physrevb.44.11845},
  url = {https://pubmed.ncbi.nlm.nih.gov/9999320/},
  note = {Source identifier: 9999320}
}