@misc{indiciae5835c16122a8,
  title = {Optical fiber waveguide sagnac interferometer. Phase 1: Multiturn one meter diameter, single mode},
  author = {Vali, V.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780008847},
  note = {Source identifier: 19780008847}
}