@misc{indiciae61f8087b1f8a,
  title = {An N+3 Technology Level Reference Propulsion System},
  author = {Jones, Scott M. and Haller, William J. and Tong, Michael To-Hing},
  year = {2017},
  url = {https://ntrs.nasa.gov/citations/20170005426},
  note = {Source identifier: 20170005426}
}