@inproceedings{Walker-Loud:2011ZQ,
  author = "Walker-Loud, André",
  title = "{Direct lattice calculation of m_d - m_u}",
  doi = "10.22323/1.105.0243",
  booktitle = "Proceedings of The XXVIII International Symposium on Lattice Field Theory {\textemdash} PoS(Lattice 2010)",
  year = 2011,
  volume = "105",
  pages = "243"
}