@misc{indiciae5b4ff79aed96,
  title = {Spin coupling between magnetic impurities in metals.},
  author = {Q Zhang and PM Levy},
  year = {1986},
  doi = {10.1103/physrevb.34.1884},
  url = {https://pubmed.ncbi.nlm.nih.gov/9939846/},
  note = {Source identifier: 9939846}
}