@inproceedings{<a href="http://dblp.uni-trier.de/db/about/bibtex.html">DBLP</a>:conf/ccs/WilliamsS12,
  author    = {Peter Williams and
               Radu Sion},
  title     = {Single round access privacy on outsourced storage},
  booktitle = {ACM Conference on Computer and Communications Security},
  year      = {2012},
  pages     = {293-304},
  ee        = {http://doi.acm.org/10.1145/2382196.2382229},
  crossref  = {DBLP:conf/ccs/2012},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{<a href="http://dblp.uni-trier.de/db/about/bibtex.html">DBLP</a>:conf/ccs/2012,
  editor    = {Ting Yu and
               George Danezis and
               Virgil D. Gligor},
  title     = {the ACM Conference on Computer and Communications Security,
               CCS'12, Raleigh, NC, USA, October 16-18, 2012},
  booktitle = {ACM Conference on Computer and Communications Security},
  publisher = {ACM},
  year      = {2012},
  isbn      = {978-1-4503-1651-4},
  ee        = {http://dl.acm.org/citation.cfm?id=2382196},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}