@misc{indiciaecdc45f92f928,
  title = {Order parameter to characterize valence-bond-solid states in quantum spin chains.},
  author = {Masaaki Nakamura and Synge Todo},
  year = {2002},
  doi = {10.1103/physrevlett.89.077204},
  url = {https://pubmed.ncbi.nlm.nih.gov/12190554/},
  note = {Source identifier: 12190554}
}