@misc{indiciae1de44f40d184,
  title = {Ultra-efficient Engine Diameter Study},
  author = {Daggett, David L. and Brown, Stephen T. and Kawai, Ron T.},
  year = {2003},
  url = {https://ntrs.nasa.gov/citations/20030061085},
  note = {Source identifier: 20030061085}
}