@misc{indiciae6d857196e00a,
  title = {Distribution function inequalities for singular integrals.},
  author = {R R Coifman},
  year = {1972},
  doi = {10.1073/pnas.69.10.2838},
  url = {https://pubmed.ncbi.nlm.nih.gov/16592019/},
  note = {Source identifier: 16592019}
}