@article{Hasenfratz:20013E,
  author = "Hasenfratz, Peter  and  Niedermayer, Ferenc",
  title = "{Asymptotic freedom with discrete spin variables? }",
  doi = "10.22323/1.007.0229",
  journal = "PoS",
  year = 2001,
  volume = "hep2001",
  pages = "229"
}