@misc{indiciae64e0ca3eaff6,
  title = {On Universal Homology Groups.},
  author = {N E Steenrod},
  year = {1935},
  doi = {10.1073/pnas.21.7.482},
  url = {https://pubmed.ncbi.nlm.nih.gov/16588006/},
  note = {Source identifier: 16588006}
}