@misc{indiciaea8ffd8d35317,
  title = {Graphical method for operating in second quantization.},
  author = {C Valdemoro and Pérez del Valle C and E Pérez-Romero and F Colmenero},
  year = {1994},
  doi = {10.1103/physreva.49.4217},
  url = {https://pubmed.ncbi.nlm.nih.gov/9910722/},
  note = {Source identifier: 9910722}
}