@misc{indiciae9e015dabee42,
  title = {Torus Homotopy Groups.},
  author = {R H Fox},
  year = {1945},
  doi = {10.1073/pnas.31.2.71},
  url = {https://pubmed.ncbi.nlm.nih.gov/16588687/},
  note = {Source identifier: 16588687}
}