@misc{indiciae93d6570b6f8e,
  title = {Functional Differential Equations and Inequalities.},
  author = {H Bateman},
  year = {1936},
  doi = {10.1073/pnas.22.3.170},
  url = {https://pubmed.ncbi.nlm.nih.gov/16588068/},
  note = {Source identifier: 16588068}
}