@misc{indiciae81538f1e4cc9,
  title = {AN OPERATIONAL 960-MC MASER SYSTEM FOR DEEP-SPACE TRACKING MISSIONS},
  author = {Sato, T. and Stelzreid, C. T.},
  year = {1962},
  url = {https://ntrs.nasa.gov/citations/19630000376},
  note = {Source identifier: 19630000376}
}