@MISC\{IMM2007-05466,
    author       = "H. Gao and P. Degano and C. Bodei and H. R. Nielson",
    title        = "Detecting Replay Attacks by Freshness Annotations",
    year         = "2007",
    month        = "nov",
    publisher    = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/5466-full.html"
}