%% You should probably cite rfc9671 instead of this I-D.
@techreport{ietf-extra-processimip-09,
    number =    {draft-ietf-extra-processimip-09},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-extra-processimip/09/},
    author =    {Kenneth Murchison and Ricardo Signes and Matthew Horsfall},
    title =     {{Sieve Email Filtering: Extension for Processing Calendar Attachments}},
    pagetotal = 15,
    year =      2024,
    month =     aug,
    day =       14,
    abstract =  {This document describes the "processcalendar" extension to the Sieve email filtering language. The "processcalendar" extension gives Sieve the ability to process machine-readable calendar data that is encapsulated in an email message using Multipurpose Internet Mail Extensions (MIME).},
}