@misc{indiciae0ad04f680127,
  title = {Mars Sample Return Using Solar Sail Propulsion},
  author = {Johnson, Les and Macdonald, Malcolm and Mcinnes, Colin and Percy, Tom},
  year = {2012},
  url = {https://ntrs.nasa.gov/citations/20120015350},
  note = {Source identifier: 20120015350}
}