@misc{indiciaecb68451d1c76,
  title = {Kosterlitz-Thouless phase transition in the two dimensional linear sigma model.},
  author = {M Gräter and C Wetterich},
  year = {1995},
  doi = {10.1103/physrevlett.75.378},
  url = {https://pubmed.ncbi.nlm.nih.gov/10060006/},
  note = {Source identifier: 10060006}
}