%% You should probably cite rfc9073 instead of this I-D.
@techreport{ietf-calext-eventpub-extensions-01,
    number =    {draft-ietf-calext-eventpub-extensions-01},
    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-calext-eventpub-extensions/01/},
    author =    {Michael Douglass},
    title =     {{Event Publishing Extensions to iCalendar}},
    pagetotal = 26,
    year =      2017,
    month =     mar,
    day =       6,
    abstract =  {This specification introduces a number of new iCalendar properties and components which are of particular use for event publishers and in social networking. This specification also defines a new STRUCTURED-DATA property for iCalendar {[}RFC5545{]} to allow for data that is directly pertinent to an event or task to be included with the calendar data.},
}