@misc{indiciae099a8f3fb4a2,
  title = {A high-gain self-steering microwave array.},
  author = {Birgenheier, R. A. and Kummer, W. H.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690036341},
  note = {Source identifier: 19690036341}
}