@misc{indiciaea715721d150b,
  title = {A modular 100 mc/sec digital timer.},
  author = {Eckhause, M. and Siegel, R. T. and Welsh, R. E.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19670039123},
  note = {Source identifier: 19670039123}
}