Gravitational fields with a non-Abelian, bidimensional Lie algebra of symmetries

@article{Sparano2001GravitationalFW,
  title={Gravitational fields with a non-Abelian, bidimensional Lie algebra of symmetries},
  author={Giovanni Sparano and Gaetano Vilasi and Alexandre M. Vinogradov},
  journal={Physics Letters B},
  year={2001},
  volume={513},
  pages={142-146}
}

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General relativity