@misc{indiciae36bee4a4dc21,
  title = {A Fredholm determinant for semiclassical quantization.},
  author = {Predrag Cvitanovic and Per E. Rosenqvist and Gabor Vattay and Hans Henrik Rugh},
  year = {1993},
  doi = {10.1063/1.165992},
  url = {https://pubmed.ncbi.nlm.nih.gov/12780067/},
  note = {Source identifier: 12780067}
}