%% You should probably cite rfc7528 instead of this I-D.
@techreport{higgs-hbbtv-urn-00,
    number =    {draft-higgs-hbbtv-urn-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-higgs-hbbtv-urn/00/},
    author =    {Paul Higgs and Jon Piesing},
    title =     {{A Uniform Resource Name (URN) Namespace for the HbbTV Association}},
    pagetotal = 8,
    year =      2014,
    month =     sep,
    day =       2,
    abstract =  {This document describes a Uniform Resource Name (URN) namespace for the Hybrid Broadcast Broadband TV Association (HbbTV) for naming persistent resources defined within HbbTV specifications. Example resources include technical documents and specifications, eXtensible Markup Language (XML) Schemas, classification schemes, XML Document Type Definitions (DTDs), namespaces, style sheets, media assets, and other types of resources produced or managed by HbbTV.},
}