@misc{indiciaec93d56152806,
  title = {STELLAR DYNAMICS OF SPHERICAL GALAXIES.},
  author = {P M Campbell},
  year = {1962},
  doi = {10.1073/pnas.48.12.1993},
  url = {https://pubmed.ncbi.nlm.nih.gov/16591021/},
  note = {Source identifier: 16591021}
}