%% You should probably cite rfc9027 instead of this I-D.
@techreport{ietf-stir-rph-emergency-services-01,
    number =    {draft-ietf-stir-rph-emergency-services-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-stir-rph-emergency-services/01/},
    author =    {Martin Dolly and Chris Wendt},
    title =     {{Assertion Values for a Resource Priority Header Claim in Support of Emergency Services Networks}},
    pagetotal = 6,
    year =      2020,
    month =     mar,
    day =       9,
    abstract =  {This document adds new assertion values for a Resource Priority Header ("rph") claim defined in RFC 8443, in support of Emergency Services Networks for emergency call origination and callback.},
}