@article{Steinhauser:20144a,
  author = "Steinhauser, Matthias",
  title = "{B_s -\rightarrow  mu^+ mu^- and Bbar -\rightarrow  X_s ganna to NNLO}",
  doi = "10.22323/1.211.0042",
  journal = "PoS",
  year = 2014,
  volume = "LL2014",
  pages = "042"
}