@misc{indiciaee8eccc7c9d3b,
  title = {Boron trifluoride nuclear detector preamplifier uses single-cable connection},
  author = {Heckelman, J. D. and Shumaker, R. E.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19650000253},
  note = {Source identifier: 19650000253}
}