@misc{indiciaef4846aef7a65,
  title = {Scattering from coated structures and antenna pattern control using impedance surfaces, part A/B},
  author = {Balanis, Constantine A. and Polka, Lesley A. and Liu, Kefeng},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900016917},
  note = {Source identifier: 19900016917}
}