@article{Foerster:200257,
  author = "Foerster, Angela  and  Tonel, Arlei Prestes",
  title = "{Integrable spin ladder systems }",
  doi = "10.22323/1.008.0013",
  journal = "PoS",
  year = 2002,
  volume = "unesp2002",
  pages = "013"
}