%% You should probably cite rfc5119 instead of this I-D.
@techreport{edwards-urn-smpte-02,
    number =    {draft-edwards-urn-smpte-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-edwards-urn-smpte/02/},
    author =    {Thomas Edwards},
    title =     {{A Uniform Resource Name (URN) Namespace for the Society of Motion Picture and Television Engineers (SMPTE)}},
    pagetotal = 9,
    year =      2007,
    month =     jun,
    day =       8,
    abstract =  {This document describes a Uniform Resource Name (URN) namespace for the Society of Motion Picture and Television Engineers (SMPTE) for naming persistent resources that SMPTE produces or manages. A subnamespace for Universal Labels is specifically described. This memo provides information for the Internet community.},
}