@misc{indiciae8bd4fa91ff45,
  title = {SPECTRAL REPRESENTATIONS AND UNBOUNDED CONVOLUTION OPERATORS.},
  author = {C I Tulcea and A B Simon},
  year = {1959},
  doi = {10.1073/pnas.45.12.1765},
  url = {https://pubmed.ncbi.nlm.nih.gov/16590572/},
  note = {Source identifier: 16590572}
}