@misc{indiciae338a8fa12676,
  title = {Solar Sail Propulsion: A Roadmap from Today's Technology to Interstellar Sailships},
  author = {Montgomery, Edward E. and Johnson, Les},
  year = {2017},
  url = {https://ntrs.nasa.gov/citations/20170005677},
  note = {Source identifier: 20170005677}
}