Perturbations of the Kerr spacetime in horizon penetrating coordinates

@misc{laguna2001perturbationskerrspacetime,
      title={Perturbations of the Kerr spacetime in horizon penetrating coordinates},
      author={Pablo Laguna and Gaurav Khanna and Jorge Pullin and Manuela Campanelli and Michael P. Ryan},
      year={2001},
      eprint={gr-qc/0010034},
      archivePrefix={arXiv},
      primaryClass={gr-qc},
      url={https://arxiv.org/abs/gr-qc/0010034},
}