@misc{indiciae7a6c7577baef,
  title = {Operational Issues in the Development of a Cost-Effective Reusable LOX/LH2 Engine},
  author = {Ballard, Richard O.},
  year = {2003},
  url = {https://ntrs.nasa.gov/citations/20030111910},
  note = {Source identifier: 20030111910}
}