@article{NieuwenhuisOliverasIC2007,
  author    = {Robert Nieuwenhuis and
               Albert Oliveras},
  title     = {{Fast Congruence Closure and Extensions}},
  journal   = {Inf. Comput.},
  volume    = {2005},
  number    = {4},
  year      = {2007},
  pages     = {557-580},
}