@misc{indiciaec16201e5089c,
  title = {Aperture reflection coefficient of TEM and TE sub 01 mode parallel-plate waveguides.},
  author = {Rudduck, R. C. and Tsai, L. L.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680039916},
  note = {Source identifier: 19680039916}
}