@article{abayesianprobabilitycalculusfordensity,
  title = {A Bayesian Probability Calculus for Density Matrices},
  author = {Manfred K. Warmuth and Dima Kuzmin},
  year = {2014},
  eprint = {1408.3100},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1408.3100v1},
}