@article{etna_vol43_pp125-141,
  author  = {Erin Carson and Nicholas Knight and James Demmel},
  title   = {An efficient deflation technique for the communication-avoiding conjugate gradient method},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {43},
  year    = {2014-2015},
  pages   = {125--141},
}