%% You should probably cite rfc5788 instead of this I-D.
@techreport{melnikov-imap-keywords-10,
    number =    {draft-melnikov-imap-keywords-10},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-melnikov-imap-keywords/10/},
    author =    {Dave Cridland and Alexey Melnikov},
    title =     {{IMAP4 Keyword Registry}},
    pagetotal = 11,
    year =      2009,
    month =     dec,
    day =       11,
    abstract =  {The aim of this document is to establish a new IANA registry for IMAP keywords and to define a procedure for keyword registration, in order to improve interoperability between different IMAP clients. {[}STANDARDS TRACK{]}},
}