@misc{indiciaeca13cb3f1788,
  title = {Discrete-time quantum mechanics.},
  author = {CM Bender and KA Milton and DH Sharp and LM Simmons and R Stong},
  year = {1985},
  doi = {10.1103/physrevd.32.1476},
  url = {https://pubmed.ncbi.nlm.nih.gov/9956302/},
  note = {Source identifier: 9956302}
}