@article{wolff1989,
  author = {Wolff, U.},
  title = {{Collective Monte Carlo Updating for Spin Systems}},
  journal = {Physical Review Letters},
  volume = {62},
  number = {4},
  pages = {361--364},
  year = {1989},
  doi = {10.1103/PhysRevLett.62.361}
}