@article{Todo2001,
  author  = {S. Todo and K. Kato},
  title   = {Cluster Algorithms for General-{S} Quantum Spin Systems},
  journal = {Phys. Rev. Lett.},
  volume  = {87},
  pages   = {047203},
  year    = {2001},
  doi     = {10.1103/PhysRevLett.87.047203},
  eprint  = {cond-mat/9911047},
}