@article{Drzewiński:1995,
  author  = "A. Drzewiński and F. Daerden",
  title   = "Renormalization of the anisotropic XY model",
  journal = "Journal of Magnetism and Magnetic Materials",
  volume  = "Vol. 140-144",
  number  = "part 3",
  pages   = "1621--1622",
  year    = "1995",
}