@misc{indiciae1106cb415d35,
  title = {Nonlinear optimal guidance algorithms Interim report},
  author = {Andrus, J. F. and Burns, I. F. and Woo, J. Z.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690021369},
  note = {Source identifier: 19690021369}
}