@article{HuebenerKruszynskaHartmannetal.2011,
  author    = {Robert H{\"u}bener and Caroline Kruszynska and Lorenz Hartmann and Wolfgang Duer and Martin B. Plenio and Jens Eisert},
  title     = {Tensor network methods with graph enhancement},
  journal   = {Physical review : B, Condensed matter and materials physics},
  volume    = {84},
  number    = {12},
  doi       = {10.1103/PhysRevB.84.125103},
  year      = {2011},
}