@misc{indiciaef6c576ed0287,
  title = {Vector-matrix second-order sensitivity equation with application to Mars entry.},
  author = {Cefola, P. J. and Shen, C. N.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690065701},
  note = {Source identifier: 19690065701}
}