@inproceedings{Cristella:2020/A,
  author = "Cristella, Leonardo",
  title = "{CMS studies of excited $B_c$ states}",
  doi = "10.22323/1.377.0014",
  booktitle = "Proceedings of 18th International Conference on B-Physics at Frontier Machines {\textemdash} PoS(Beauty2019)",
  year = 2020,
  volume = "377",
  pages = "014"
}