%% You should probably cite rfc6963 instead of this I-D.
@techreport{saintandre-urn-example-02,
    number =    {draft-saintandre-urn-example-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-saintandre-urn-example/02/},
    author =    {Peter Saint-Andre},
    title =     {{A Uniform Resource Name (URN) Namespace for Examples}},
    pagetotal = 5,
    year =      2013,
    month =     feb,
    day =       14,
    abstract =  {This document defines a Uniform Resource Name (URN) namespace identifier enabling generation of URNs that are appropriate for use in documentation, private testing, and the like.},
}