@misc{indiciae780eef216684,
  title = {Classification of macromolecular assemblies studied as 'single particles'.},
  author = {J Frank},
  year = {1990},
  doi = {10.1017/s0033583500005564},
  url = {https://pubmed.ncbi.nlm.nih.gov/2204955/},
  note = {Source identifier: 2204955}
}