@article{ robert_m._gray_toeplitz_2006,
  title = {Toeplitz and {Circulant} {Matrices}: {A} review},
  volume = {2},
  number = {3},
  journal = {Foundations and Trends in Communications and Information Theory},
  author = {{Robert M. Gray}},
  year = {2006},
  note = {01063},
  pages = {155--239}
}