%% You should probably cite rfc3553 instead of this I-D.
@techreport{mealling-iana-urn-14,
    number =    {draft-mealling-iana-urn-14},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-mealling-iana-urn/14/},
    author =    {Michael H. Mealling and Ted Hardie and Larry M Masinter and Graham Klyne},
    title =     {{An IETF URN Sub-namespace for Registered Protocol Parameters}},
    pagetotal = 8,
    year =      2003,
    month =     mar,
    day =       20,
    abstract =  {This document describes a new sub-delegation for the 'ietf' URN namespace for registered protocol items. The 'ietf' URN namespace is defined in RFC 2648 as a root for persistent URIs that refer to IETF- defined resources. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.},
}