Solving the Hamilton-Jacobi equation for general relativity.

@article{Parry1994SolvingTH,
  title={Solving the Hamilton-Jacobi equation for general relativity.},
  author={Parry and Salopek and Stewart},
  journal={Physical review. D, Particles and fields},
  year={1994},
  volume={49 6},
  pages={2872-2881}
}