@misc{indiciae4084adb5ca24,
  title = {Multimode Directional Coupler for Utilization of Harmonic Frequencies from TWTAs},
  author = {Simmons, Rainee N. and Wintucky, Edwin G.},
  year = {2013},
  url = {https://ntrs.nasa.gov/citations/20140001433},
  note = {Source identifier: 20140001433}
}