@misc{indiciae73f09b3cfe4d,
  title = {Electric propulsion options for the SP-100 reference mission},
  author = {Hardy, T. L. and Rawlin, V. K. and Patterson, M. J.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870004989},
  note = {Source identifier: 19870004989}
}