@misc{indiciaeadbf0bcaac7c,
  title = {Conversion of Osculating Orbital Elements to Mean Orbital Elements},
  author = {Der, Gim J. and Danchick, Roy},
  year = {1996},
  url = {https://ntrs.nasa.gov/citations/19960035775},
  note = {Source identifier: 19960035775}
}