@inproceedings{Babelon:2002Uq,
  author = "Babelon, Olivier  and  Ferreira, Luiz Agostinho",
  title = "{Integrability in higher dimensions: a model with exact Hopfion solutions }",
  doi = "10.22323/1.008.0003",
  booktitle = "Proceedings of Workshop on Integrable Theories, Solitons and Duality {\textemdash} PoS(unesp2002)",
  year = 2002,
  volume = "008",
  pages = "003"
}