@article{PhysRevB.83.045414,
  title = {Stability of edge states and edge magnetism in graphene nanoribbons},
  author = {Kunstmann, Jens and \"Ozdo\ifmmode \breve{g}\else \u{g}\fi{}an, Cem and Quandt, Alexander and Fehske, Holger},
  journal = {Phys. Rev. B},
  volume = {83},
  issue = {4},
  pages = {045414},
  numpages = {8},
  year = {2011},
  month = {Jan},
  publisher = {American Physical Society},
  doi = {10.1103/PhysRevB.83.045414},
  url = {http://link.aps.org/doi/10.1103/PhysRevB.83.045414}
}