@misc{indiciaeb49ee7278d71,
  title = {Response of orbit determination systems to model errors},
  author = {Squires, R. K. and Wolf, H. and Woolston, D. S.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700002542},
  note = {Source identifier: 19700002542}
}