%% You should probably cite rfc3845 instead of this I-D.
@techreport{ietf-dnsext-nsec-rdata-06,
    number =    {draft-ietf-dnsext-nsec-rdata-06},
    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-dnsext-nsec-rdata/06/},
    author =    {Jacob Schlyter},
    title =     {{DNS Security (DNSSEC) NextSECure (NSEC) RDATA Format}},
    pagetotal = 7,
    year =      2004,
    month =     may,
    day =       14,
    abstract =  {This document redefines the wire format of the "Type Bit Map" field in the DNS NextSECure (NSEC) resource record RDATA format to cover the full resource record (RR) type space. {[}STANDARDS-TRACK{]}},
}