@misc{indiciaea2c34ff92432,
  title = {Solar electric interplanetary trajectory and performance data for sub-optimal powered spacecraft},
  author = {Horsewood, J. L. and Mann, F. I.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700028080},
  note = {Source identifier: 19700028080}
}