@misc{indiciae7857ba43f844,
  title = {Conjugate gradient methods with an application to V/STOL flight-path optimization},
  author = {Bryson, A. E., Jr. and Mehra, R. K.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680007007},
  note = {Source identifier: 19680007007}
}