@misc{indiciaeccef0b4e3d89,
  title = {Equatorial Longitude Effects on Cosmic Rays.},
  author = {R A Millikan and H V Neher},
  year = {1935},
  doi = {10.1073/pnas.21.6.313},
  url = {https://pubmed.ncbi.nlm.nih.gov/16587970/},
  note = {Source identifier: 16587970}
}