@misc{rfc6856,
    series =    {Request for Comments},
    number =    6856,
    howpublished =  {RFC 6856},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6856},
    url =       {https://www.rfc-editor.org/info/rfc6856},
    author =    {Randall Gellens and Chris Newman and Jiankang Yao and Kazunori Fujiwara},
    title =     {{Post Office Protocol Version 3 (POP3) Support for UTF-8}},
    pagetotal = 14,
    year =      2013,
    month =     mar,
    abstract =  {This specification extends the Post Office Protocol version 3 (POP3) to support international strings encoded in UTF-8 in usernames, passwords, mail addresses, message headers, and protocol-level text strings.},
}