%% You should probably cite rfc8936 instead of this I-D.
@techreport{ietf-secevent-http-poll-00,
    number =    {draft-ietf-secevent-http-poll-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-ietf-secevent-http-poll/00/},
    author =    {Annabelle Backman and Michael B. Jones and Phil Hunt and Marius Scurtescu and Morteza Ansari and Anthony Nadalin},
    title =     {{Poll-Based SET Token Delivery Using HTTP}},
    pagetotal = 22,
    year =      2018,
    month =     apr,
    day =       16,
    abstract =  {This specification defines how a series of security event tokens (SETs) may be delivered to a previously registered receiver using HTTP POST over TLS initiated as a poll by the receiver. The specification also defines how delivery can be assured subject to the SET Token Receiver's need for assurance.},
}