@misc{indiciae5f90bc75c4ab,
  title = {Cost efficient operations for Discovery class missions},
  author = {Cameron, G. E. and Landshof, J. A. and Whitworth, G. W.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950011133},
  note = {Source identifier: 19950011133}
}