@misc{indiciae05d28b40d658,
  title = {Scattering by a two dimensional groove in a ground plane},
  author = {Barkeshli, K. and Volakis, J. L.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890007706},
  note = {Source identifier: 19890007706}
}