@article{Yamaguchi:2017XC,
  author = "Yamaguchi, Azusa  and  Boyle, Peter A.",
  title = "{Hierarchically deflated conjugate residua}",
  doi = "10.22323/1.256.0374",
  journal = "PoS",
  year = 2017,
  volume = "LATTICE2016",
  pages = "374"
}