@inproceedings{Barel:2023oa,
  author = "Barel, Marten  and  De Bruyn, Kristof  and  Fleischer, Robert  and  Malami, Eleftheria",
  title = "{Penguin Effects in $B_d^0\to J/\psi K^0_{\text{S}}$ and $B_s^0\to J/\psi\phi$}",
  doi = "10.22323/1.411.0111",
  booktitle = "Proceedings of 11th International Workshop on the CKM Unitarity Triangle {\textemdash} PoS(CKM2021)",
  year = 2023,
  volume = "411",
  pages = "111"
}