@misc{indiciae7cb8c1be20fe,
  title = {Phonon spectrum for barium ferrite.},
  author = {SP Marshall and JB Sokoloff},
  year = {1991},
  doi = {10.1103/physrevb.44.619},
  url = {https://pubmed.ncbi.nlm.nih.gov/9999161/},
  note = {Source identifier: 9999161}
}