@misc{indiciaea07365f98c68,
  title = {Real-space pairing in fermion systems.},
  author = {KA Penson and M Kolb},
  year = {1986},
  doi = {10.1103/physrevb.33.1663},
  url = {https://pubmed.ncbi.nlm.nih.gov/9938468/},
  note = {Source identifier: 9938468}
}