@misc{indiciae8560b28f7fa5,
  title = {Optimal symmetric flight with an intermediate vehicle model},
  author = {Kelley, H. J. and Cliff, E. M. and Menon, P. K. A.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830060497},
  note = {Source identifier: 19830060497}
}