@misc{indiciae9c870bc30641,
  title = {Aiming Instruments On The Space Station},
  author = {Estus, Jay M. and Laskin, Robert and Lin, Yu-Hwan},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890000510},
  note = {Source identifier: 19890000510}
}