@misc{indiciaeadb2d789132e,
  title = {COMMUTATORS OF SINGULAR INTEGRAL OPERATORS.},
  author = {A P Calderón},
  year = {1965},
  doi = {10.1073/pnas.53.5.1092},
  url = {https://pubmed.ncbi.nlm.nih.gov/16591273/},
  note = {Source identifier: 16591273}
}