@misc{indiciae22de323dc347,
  title = {Groups Having a Small Number of Subgroups.},
  author = {G A Miller},
  year = {1939},
  doi = {10.1073/pnas.25.7.367},
  url = {https://pubmed.ncbi.nlm.nih.gov/16577916/},
  note = {Source identifier: 16577916}
}