@inproceedings{Farchioni:2005MQ,
  author = "Farchioni, F.  and  Jansen, K.  and  McNeile, Craig  and  Michael, Chris  and  Montvay, I.  and  Nagai, Kei-ichi  and  Papinutto, M.  and  Pickavance, Jenny  and  Scholz, Enno E.  and  Scorzato, Luigi  and  Shindler, A.  and  Ukita, Naoya  and  Urbach, C.  and  Wenger, Urs  and  Wetzorke, I.",
  title = "{Twisted mass fermions: neutral pion masses from disconnected contributions. }",
  doi = "10.22323/1.020.0033",
  booktitle = "Proceedings of XXIIIrd International Symposium on Lattice Field Theory {\textemdash} PoS(LAT2005)",
  year = 2005,
  volume = "020",
  pages = "033"
}