@article{EstrGrei:2016,
  author    = {Estrin, Ron and Greif, Chen},
  title     = {Towards an optimal condition number of certain augmented Lagrangian-type
               saddle-point matrices},
  journal   = {Numerical Linear Algebra with Applications},
  volume    = {23},
  number    = {4},
  pages     = {693--705},
  year      = {2016},
}