@inproceedings{Ruiz-Femenía:2009dE,
  author = "Ruiz-Femenía, Pedro",
  title = "{The $\Upsilon\rightarrow X \gamma$ photon spectrum in the soft-energy region}",
  doi = "10.22323/1.069.0005",
  booktitle = "Proceedings of International Workshop on Effective Field Theories: from the pion to the upsilon {\textemdash} PoS(EFT09)",
  year = 2009,
  volume = "069",
  pages = "005"
}