@misc{rfc5540,
    series =    {Request for Comments},
    number =    5540,
    howpublished =  {RFC 5540},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC5540},
    url =       {https://www.rfc-editor.org/info/rfc5540},
    author =    {RFC Editor},
    title =     {{40 Years of RFCs}},
    pagetotal = 3,
    year =      2009,
    month =     apr,
    abstract =  {This RFC marks the 40th anniversary of the RFC document series. This memo provides information for the Internet community.},
}