@misc{indiciae3770dc5226ad,
  title = {A proton spectrometer for NASA's Apollo applications program},
  author = {Guenther, G. A. and Oran, W. A. and Parnell, T. A.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700051288},
  note = {Source identifier: 19700051288}
}