@misc{indiciaeeb064be33066,
  title = {Preliminary candidate advanced avionics system for general aviation},
  author = {Mccalla, T. M. and Grismore, F. L. and Greatline, S. E. and Birkhead, L. M.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780002117},
  note = {Source identifier: 19780002117}
}