%% You should probably cite draft-ietf-dnsop-dns-zone-digest instead of this I-D.
@techreport{wessels-dns-zone-digest-02,
    number =    {draft-wessels-dns-zone-digest-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-wessels-dns-zone-digest/02/},
    author =    {Duane Wessels and Piet Barber and Matt Weinberg and Warren "Ace" Kumari and Wes Hardaker},
    title =     {{Message Digest for DNS Zones}},
    pagetotal = 17,
    year =      2018,
    month =     jul,
    day =       2,
    abstract =  {This document describes a protocol and DNS Resource Record used to provide a message digest over DNS zone data. In particular, it describes how to compute, sign, represent, and use the message digest to verify the contents of a zone for accuracy and completeness. The ZONEMD Resource Record type is introduced for conveying the message digest data.},
}