@article{JMLR:v13:may12a,
  author  = {Benedict C. May and Nathan Korda and Anthony Lee and David S. Leslie},
  title   = {Optimistic Bayesian Sampling in Contextual-Bandit Problems},
  journal = {Journal of Machine Learning Research},
  year    = {2012},
  volume  = {13},
  number  = {67},
  pages   = {2069--2106},
  url     = {http://jmlr.org/papers/v13/may12a.html}
}