@misc{indiciae18374a12a2c2,
  title = {Constraint operator solution to quantum billiard problems.},
  author = {DA McGrew and W Bauer},
  year = {1996},
  doi = {10.1103/physreve.54.5809},
  url = {https://pubmed.ncbi.nlm.nih.gov/9965770/},
  note = {Source identifier: 9965770}
}