@article{Greub:2001fV,
  author = "Greub, Christoph  and  Walker, M.",
  title = "{Two-loop virtual corrections to $b\rightarrow  sl^+l^-$ in the standard model}",
  doi = "10.22323/1.007.0091",
  journal = "PoS",
  year = 2001,
  volume = "hep2001",
  pages = "091"
}