@misc{indiciae6d2e5b5fdc14,
  title = {Calculation of precision satellite orbits with nonsingular elements /VOP formulation/},
  author = {Velez, C. E. and Cefola, P. J. and Long, A. C. and Nimitz, K. S.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740050632},
  note = {Source identifier: 19740050632}
}