@misc{deck2014ttvfast,
  title={TTVFast: An efficient and accurate code for transit timing inversion problems},
  author={Katherine M. Deck and Eric Agol and Matthew J. Holman and David Nesvorny},
  year={2014},
  eprint={1403.1895},
  archivePrefix={arXiv},
  primaryClass={astro-ph.EP},
  doi={10.1088/0004-637X/787/2/132},
  url={https://arxiv.org/abs/1403.1895}
}