@misc{indiciae0af338db8771,
  title = {The Angular Diameters of Globular Clusters.},
  author = {H Shapley and A R Sayer},
  year = {1935},
  doi = {10.1073/pnas.21.11.593},
  url = {https://pubmed.ncbi.nlm.nih.gov/16588013/},
  note = {Source identifier: 16588013}
}