@misc{indiciae855211e93d42,
  title = {Degree of Approximation by Polynomials-Problem alpha.},
  author = {W E Sewell},
  year = {1937},
  doi = {10.1073/pnas.23.9.491},
  url = {https://pubmed.ncbi.nlm.nih.gov/16577801/},
  note = {Source identifier: 16577801}
}