@misc{indiciae36d5d0a7ce1e,
  title = {Solution for the U-negative Hubbard superconductor including second-order correlation effects.},
  author = {A Martín-Rodero and F Flores},
  year = {1992},
  doi = {10.1103/physrevb.45.13008},
  url = {https://pubmed.ncbi.nlm.nih.gov/10001367/},
  note = {Source identifier: 10001367}
}