@misc{indiciaefc93f422a771,
  title = {How to Calibrate Edge Sensors on Segmented Mirror Telescopes},
  author = {Shelton, Chris and Roberts, Lewis C, Jr.},
  year = {2012},
  url = {https://ntrs.nasa.gov/citations/20130000252},
  note = {Source identifier: 20130000252}
}