@misc{indiciae325f322adcc1,
  title = {Whyburn'S conjecture for some differentiable maps.},
  author = {J Cronin and L F McAuley},
  year = {1966},
  doi = {10.1073/pnas.56.2.405},
  url = {https://pubmed.ncbi.nlm.nih.gov/16591368/},
  note = {Source identifier: 16591368}
}