@misc{indiciae04297107312f,
  title = {Optimal symmetric flight with an intermediate vehicle model},
  author = {Menon, P. K. A. and Kelley, H. J. and Cliff, E. M.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19840008049},
  note = {Source identifier: 19840008049}
}