@misc{indiciae3ec83f8d6d49,
  title = {Mars Hybrid Propulsion System Trajectory Analysis: Cargo Missions - Part II},
  author = {Chai, Patrick R. and Merrill, Raymond G. and Qu, Min},
  year = {2015},
  url = {https://ntrs.nasa.gov/citations/20160006327},
  note = {Source identifier: 20160006327}
}