@article{precisemeasurementofthespinparameterof,
  title = {Precise Measurement of the Spin Parameter of the Stellar-Mass Black Hole M33 X-7},
  author = {Jifeng Liu and Jeffery E. McClintock and Ramesh Narayan and Shane W. Davis and Jerome A. Orosz},
  year = {2008},
  eprint = {0803.1834},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/0803.1834v3},
}