@misc{indiciae81fdf1c6c722,
  title = {Lunar global figure from mare surface elevations},
  author = {Sjogren, W. L. and Wollenhaupt, W. R.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760045320},
  note = {Source identifier: 19760045320}
}