@misc{indiciae5a86899de896,
  title = {On Combinatorial Topology.},
  author = {A W Tucker},
  year = {1932},
  doi = {10.1073/pnas.18.1.86},
  url = {https://pubmed.ncbi.nlm.nih.gov/16577435/},
  note = {Source identifier: 16577435}
}