@misc{indiciae390366ed6c72,
  title = {Pairing ground states in fermion systems: A static method.},
  author = {K Moulopoulos and NW Ashcroft},
  year = {1990},
  doi = {10.1103/physrevb.42.7855},
  url = {https://pubmed.ncbi.nlm.nih.gov/9994945/},
  note = {Source identifier: 9994945}
}