@misc{indiciae05b0725e89bf,
  title = {NASA spacecraft propulsion activities},
  author = {Curran, Francis M. and Tyburski, Timothy E. and Sankovic, John M. and Jankovsky, Robert S. and Reed, Brian D. and Schneider, Steven J. and Hamley, John A. and Patterson, Michael J. and Sovey, James S.},
  year = {1997},
  url = {https://ntrs.nasa.gov/citations/19980019315},
  note = {Source identifier: 19980019315}
}