@misc{indiciaeef188c399668,
  title = {Conceptual design optimization study},
  author = {Hollowell, S. J. and Beeman, E. R., II and Hiyama, R. M.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900012439},
  note = {Source identifier: 19900012439}
}