@misc{indiciae5b52270f597c,
  title = {Normalization and Implementation of Three Gravitational Acceleration Models},
  author = {Eckman, Randy A. and Brown, Aaron J. and Adamo, Daniel R. and Gottlieb, Robert G.},
  year = {2016},
  url = {https://ntrs.nasa.gov/citations/20160011252},
  note = {Source identifier: 20160011252}
}