@misc{indiciae2c33a71cbd7d,
  title = {A candidate mission using the Shuttle and solar electric propulsion},
  author = {Duxbury, J. H. and Finke, R. C.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770053698},
  note = {Source identifier: 19770053698}
}