@misc{indiciaea195815aeeb0,
  title = {Classical aspects of quantum spin chains.},
  author = {LF Lemmens and K Kopinga and de Jonge WJ},
  year = {1989},
  doi = {10.1103/physrevlett.63.5},
  url = {https://pubmed.ncbi.nlm.nih.gov/10040418/},
  note = {Source identifier: 10040418}
}