@misc{cryptoeprint:2009:180,
    author = {Haakon Ringberg and Benny Applebaum and Michael J. Freedman and Matthew Caesar and Jennifer Rexford},
    title = {Collaborative, Privacy-Preserving Data Aggregation at Scale},
    howpublished = {Cryptology ePrint Archive, Report 2009/180},
    year = {2009},
    url = {http://eprint.iacr.org/2009/180},
}