@misc{indiciae95c2e1f66087,
  title = {Hubble Space Telescope maintenance and refurbishment planning analysis},
  author = {Pizzano, F. and Kincade, R. S.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890060788},
  note = {Source identifier: 19890060788}
}