@misc{rfc6858,
    series =    {Request for Comments},
    number =    6858,
    howpublished =  {RFC 6858},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6858},
    url =       {https://www.rfc-editor.org/info/rfc6858},
    author =    {Arnt Gulbrandsen},
    title =     {{Simplified POP and IMAP Downgrading for Internationalized Email}},
    pagetotal = 6,
    year =      2013,
    month =     mar,
    abstract =  {This document specifies a method for IMAP and POP servers to serve internationalized messages to conventional clients. The specification is simple, easy to implement, and provides only rudimentary results.},
}