@article{Tomboulis:20124u,
  author = "Tomboulis, Terry E.  and  Cheng, Xi",
  title = "{Fermion RG blocking transformations and conformal windows}",
  doi = "10.22323/1.139.0092",
  journal = "PoS",
  year = 2012,
  volume = "Lattice 2011",
  pages = "092"
}