@misc{indiciae1f261179df86,
  title = {Graph rules for functions of the time-evolution operator.},
  author = {HD Dahmen and W Krzyzanowski and ML Larsen},
  year = {1986},
  doi = {10.1103/physrevd.33.1726},
  url = {https://pubmed.ncbi.nlm.nih.gov/9956823/},
  note = {Source identifier: 9956823}
}