@inproceedings{Shintani:2008V5,
  author = "Shintani, Eigo",
  title = "{Pion mass difference from vacuum polarization}",
  doi = "10.22323/1.042.0134",
  booktitle = "Proceedings of The XXV International Symposium on Lattice Field Theory {\textemdash} PoS(LATTICE 2007)",
  year = 2008,
  volume = "042",
  pages = "134"
}