@Article{polymer-journal,
  author =  {Lujo Bauer and Jay Ligatti and David Walker},
  title =  {Composing Expressive Runtime Security Policies},
  journal = {{ACM} Transactions on Software Engineering and Methodology},
  volume = {18},
  number = {3},
  year = {2009},
  issn = {1049-331X},
  pages = {1--43},
  doi = {http://doi.acm.org/10.1145/1525880.1525882},
  publisher = {ACM},
  address = {New York, NY, USA},
}