@misc{indiciae8f243b14acab,
  title = {High-efficiency multifrequency feed},
  author = {Ajioka, J. S. and Tsuda, G. I. and Leeper, W. A.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19740000288},
  note = {Source identifier: 19740000288}
}