@misc{rfc2389,
    series =    {Request for Comments},
    number =    2389,
    howpublished =  {RFC 2389},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC2389},
    url =       {https://www.rfc-editor.org/info/rfc2389},
    author =    {Robert Elz and Paul Hethmon},
    title =     {{Feature negotiation mechanism for the File Transfer Protocol}},
    pagetotal = 9,
    year =      1998,
    month =     aug,
    abstract =  {This document provides a mechanism by which clients of the FTP protocol can discover which new features are supported by a particular FTP server. {[}STANDARDS-TRACK{]}},
}