@article{etna_vol29_pp31-45,
  author  = {Thomas K. Huckle and Dimitrios Noutsos},
  title   = {Preconditioning block Toeplitz matrices},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {29},
  year    = {2007-2008},
  pages   = {31--45},
}