@misc{indiciae93931891a84a,
  title = {Geometry-controlled conserving approximations for the t-J model.},
  author = {MD Johnson and C Gros and von Szczepanski KJ},
  year = {1991},
  doi = {10.1103/physrevb.43.11207},
  url = {https://pubmed.ncbi.nlm.nih.gov/9996860/},
  note = {Source identifier: 9996860}
}