@misc{indiciae4b3dab6f92dc,
  title = {Stress differences and the reference ellipsoid},
  author = {Kaula, W. M. and Okeefe, J. A.},
  year = {1963},
  url = {https://ntrs.nasa.gov/citations/19640001469},
  note = {Source identifier: 19640001469}
}