%% You should probably cite rfc7929 instead of this I-D.
@techreport{ietf-dane-openpgpkey-02,
    number =    {draft-ietf-dane-openpgpkey-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-ietf-dane-openpgpkey/02/},
    author =    {Paul Wouters},
    title =     {{Using DANE to Associate OpenPGP public keys with email addresses}},
    pagetotal = 9,
    year =      2015,
    month =     mar,
    day =       9,
    abstract =  {OpenPGP is a message format for email (and file) encryption, that lacks a standardized lookup mechanism to obtain OpenPGP public keys. This document specifies a method for securely publishing and locating OpenPGP public keys in DNS using a new OPENPGPKEY DNS Resource Record.},
}