@misc{indiciae64c5a4dade5d,
  title = {Increased capacitance for VLF umbrella antennas using multiple-wire rib construction.},
  author = {Graf, E. R. and Smith, C. E.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690042052},
  note = {Source identifier: 19690042052}
}