@article{JMP09,
  author        = {H. Jonker and S. Mauw and J. Pang},
  title         = {A formal framework for quantifying voter-controlled privacy},
  journal       = {Journal of Algorithms in Cognition, Informatics and Logic},
  volume        = {64},
  number        = {2-3},
  pages         = {89--105},
  year          = {2009},
  ee            = {http://dx.doi.org/10.1016/j.jalgor.2009.02.007},
  publisher     = {Elsevier}
}