@misc{indiciae5240be16d0e8,
  title = {Automatic control of clock duty cycle},
  author = {Feng, Xiaoxin and Roper, Weston and Seefeldt, James D.},
  year = {2010},
  url = {https://ntrs.nasa.gov/citations/20110000817},
  note = {Source identifier: 20110000817}
}