@misc{indiciaea05a05d402b3,
  title = {Coordinate system influence on the regularized trajectory optimization problem},
  author = {Lewallen, J. M. and Schwausch, O. A. and Tapley, B. D.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710038194},
  note = {Source identifier: 19710038194}
}