@article{Fioravanti:2000US,
  author = "Fioravanti, Davide",
  title = "{Hidden Virasoro symmetry of Sine-Gordon theory }",
  doi = "10.22323/1.006.0043",
  journal = "PoS",
  year = 2000,
  volume = "tmr2000",
  pages = "043"
}