@misc{indiciae4ad08e41358a,
  title = {Technology Area Roadmap for In Space Propulsion Technologies},
  author = {Johnson, Les and Meyer, Mike and Coote, David and Goebel, Dan and Palaszewski, Bryan and White, Sonny},
  year = {2010},
  url = {https://ntrs.nasa.gov/citations/20110005503},
  note = {Source identifier: 20110005503}
}