@misc{indiciaeab0fa2676ecc,
  title = {Earth based orbit determination for a Mars orbiting spacecraft},
  author = {Jordan, J. F. and Reynolds, G. W. and Russell, R. K.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710037960},
  note = {Source identifier: 19710037960}
}