@misc{indiciae496321a8758d,
  title = {A symbol calculus for Toeplitz operators.},
  author = {C A Berger and L A Coburn},
  year = {1986},
  doi = {10.1073/pnas.83.10.3072},
  url = {https://pubmed.ncbi.nlm.nih.gov/16593695/},
  note = {Source identifier: 16593695}
}