@misc{indiciaeb2351fa692a9,
  title = {ATOM CONCENTRATION MEASUREMENTS USING ELECTRON PARAMAGNETIC RESONANCE},
  author = {Barth, C. A. and Booth, F. B. and Hildebrandt, A. F.},
  year = {1963},
  url = {https://ntrs.nasa.gov/citations/19630004209},
  note = {Source identifier: 19630004209}
}