@misc{indiciae4d072e73511c,
  title = {Geopotential representation with sampling functions.},
  author = {Lundquist, C. A. and Giacaglia, G. E. O.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730029990},
  note = {Source identifier: 19730029990}
}