@article{richardson_1921, 
  title={THE AMERICAN MATHEMATICAL SOCIETY}, 
  volume={53}, 
  DOI={10.1126/science.53.1365.191}, 
  number={1365}, 
  publisher={American Association for the Advancement of Science (AAAS)}, 
  author={Richardson}, 
  year={1921}, 
  month={Feb}
  }