%% You should probably cite rfc2915 instead of this I-D.
@techreport{ietf-urn-naptr-rr-04,
    number =    {draft-ietf-urn-naptr-rr-04},
    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-urn-naptr-rr/04/},
    author =    {Michael H. Mealling and Dr. Ron Daniel},
    title =     {{The Naming Authority Pointer (NAPTR) DNS Resource Record}},
    pagetotal = 18,
    year =      2000,
    month =     aug,
    day =       7,
    abstract =  {This document describes a Domain Name System (DNS) resource record which specifies a regular expression based rewrite rule that, when applied to an existing string, will produce a new domain label or Uniform Resource Identifier (URI). {[}STANDARDS-TRACK{]}},
}