@misc{indiciaebb0171ff8327,
  title = {Phase transitions in angle variables.},
  author = {F Iachello},
  year = {2003},
  doi = {10.1103/physrevlett.91.132502},
  url = {https://pubmed.ncbi.nlm.nih.gov/14525300/},
  note = {Source identifier: 14525300}
}