@misc{indiciae343a40c8d8d8,
  title = {Semiannalytical satellite theory and sequential estimation},
  author = {Taylor, S. P. and Cefola, P. J.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810002566},
  note = {Source identifier: 19810002566}
}