@misc{indiciae32c73faab09a,
  title = {Heavy cosmic rays at sea level.},
  author = {PC Yock},
  year = {1986},
  doi = {10.1103/physrevd.34.698},
  url = {https://pubmed.ncbi.nlm.nih.gov/9957200/},
  note = {Source identifier: 9957200}
}