@article{chikazumi1997,
  title={Physics of Ferromagnetism},
  author={Sōshin Chikazumi and C. D. Graham},
  year={1997},
  doi={10.1093/oso/9780198517764.001.0001},
  url={https://doi.org/10.1093/oso/9780198517764.001.0001}
}