%% You should probably cite rfc2061 instead of this I-D.
@techreport{crispin-imap-compat-00,
    number =    {draft-crispin-imap-compat-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-crispin-imap-compat/00/},
    author =    {Mark Crispin},
    title =     {{IMAP4 Compatibility with IMAP2bis}},
    pagetotal = 3,
    year =      1996,
    month =     mar,
    day =       20,
    abstract =  {This document is intended to be read along with RFC 1176 and the most recent IMAP4 specification (RFC 2060) to assist implementors in creating an IMAP4 implementation to interoperate with implementations that conform to earlier specifications. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.},
}