@article{Nierste:2022MU,
  author = "Nierste, Ulrich",
  title = "{B-$\bar{\rm B}$ mixing: decay matrix at high precision}",
  doi = "10.22323/1.405.0020",
  journal = "PoS",
  year = 2022,
  volume = "DISCRETE2020-2021",
  pages = "020"
}