@misc{indiciaef76bef7420a7,
  title = {Broadband Achromatic Phase Shifter for a Nulling Interferometer},
  author = {Bolcar, Matthew R. and Lyon, Richard G.},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20120000785},
  note = {Source identifier: 20120000785}
}