@misc{indiciae1680b27a6a08,
  title = {An explicit solution to the exoatmospheric powered flight guidance and trajectory optimization problem for rocket propelled vehicles},
  author = {Jaggers, R. F.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770059962},
  note = {Source identifier: 19770059962}
}