@misc{indiciaee895de03b32f,
  title = {Multichannel pulse height analyzer is inexpensive, features low power requirements},
  author = {Ewald, C. J. and Sarkady, A. A.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670000258},
  note = {Source identifier: 19670000258}
}