@misc{1199416,
  author = {David A Hill and Richard L Ehret},
  title = {Near-field gain of pyramidal horns from 18 to 40 GHz:},
  year = {1989},
  month = {1989-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.89-3924},
  language = {en},
}