@misc{rfc6721,
    series =    {Request for Comments},
    number =    6721,
    howpublished =  {RFC 6721},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6721},
    url =       {https://www.rfc-editor.org/info/rfc6721},
    author =    {James M. Snell},
    title =     {{The Atom "deleted-entry" Element}},
    pagetotal = 10,
    year =      2012,
    month =     sep,
    abstract =  {This specification adds mechanisms to the Atom Syndication Format that publishers of Atom Feed and Entry documents can use to explicitly identify Atom entries that have been removed. {[}STANDARDS-TRACK{]}},
}