%% You should probably cite draft-extra-imap-uniqueid instead of this I-D.
@techreport{gondwana-imap-uniqueid-00,
    number =    {draft-gondwana-imap-uniqueid-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-gondwana-imap-uniqueid/00/},
    author =    {Bron Gondwana},
    title =     {{IMAP Extension for unique identifiers}},
    pagetotal = 8,
    year =      2018,
    month =     mar,
    day =       19,
    abstract =  {This document adds new properties to IMAP mailboxes and messages to allow clients to more efficiently re-use cached data for resources which have changed location on the server.},
}