@misc{indiciae164dde970dde,
  title = {NASA's Launch Propulsion Systems Technology Roadmap},
  author = {McConnaughey, Paul K. and Femminineo, Mark G. and Koelfgen, Syri J. and Lepsch, Roger A and Ryan, Richard M. and Taylor, Steven A.},
  year = {2012},
  url = {https://ntrs.nasa.gov/citations/20120014957},
  note = {Source identifier: 20120014957}
}