@misc{indiciaea84a2dda547f,
  title = {The Relay system},
  author = {Abramson, B. N. and Littenberg, W. and Skinner, M. R. and Thomas, C. M.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19660000938},
  note = {Source identifier: 19660000938}
}