@inproceedings{RocaZamora:2009GD,
  author = "Roca Zamora, Luis",
  title = "{Scalar radius of the pion and $\gamma \gamma\rightarrow \pi \pi$}",
  doi = "10.22323/1.069.0031",
  booktitle = "Proceedings of International Workshop on Effective Field Theories: from the pion to the upsilon {\textemdash} PoS(EFT09)",
  year = 2009,
  volume = "069",
  pages = "031"
}