@misc{indiciae41b4c4868b51,
  title = {Optical pathlength control in the nanometer regime on the JPL phase B interferometer testbed},
  author = {O'Neal, Michael C. and Spanos, John T.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19930055481},
  note = {Source identifier: 19930055481}
}