@inproceedings{Rittenberg:2000cu,
  author = "Rittenberg, Vladimir",
  title = "{Valence bound ground states in quantum antiferromagnets and quadratic algebras }",
  doi = "10.22323/1.006.0048",
  booktitle = "Proceedings of Non-perturbative Quantum Effects 2000 {\textemdash} PoS(tmr2000)",
  year = 2000,
  volume = "006",
  pages = "048"
}