@misc{indiciae074c528e7f64,
  title = {PLAN-IT - Scheduling assistant for solar system exploration},
  author = {Dias, William C. and Henricks, Julia A. and Wong, Jennifer C.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880033260},
  note = {Source identifier: 19880033260}
}