@article{w1965,
  title={Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables},
  author={J. W. W. and Milton Abramowitz and Irene A. Stegun},
  year={1965},
  journal={Mathematics of Computation},
  doi={10.2307/2004114},
  url={https://doi.org/10.2307/2004114}
}