@misc{indiciae4c7ebd2414b2,
  title = {Relativized problems with abelian phase group in topological dynamics.},
  author = {D McMahon},
  year = {1976},
  doi = {10.1073/pnas.73.4.1007},
  url = {https://pubmed.ncbi.nlm.nih.gov/16592304/},
  note = {Source identifier: 16592304}
}