@article{Endress:20121L,
  author = "Endress, Eric  and  Pena, Carlos",
  title = "{Variance reduction techniques for a quantitative understanding of the Delta I=1/2 rule}",
  doi = "10.22323/1.164.0131",
  journal = "PoS",
  year = 2012,
  volume = "Lattice 2012",
  pages = "131"
}