%% You should probably cite rfc8399 instead of this I-D.
@techreport{ietf-lamps-rfc5280-i18n-update-04,
    number =    {draft-ietf-lamps-rfc5280-i18n-update-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-lamps-rfc5280-i18n-update/04/},
    author =    {Russ Housley},
    title =     {{Internationalization Updates to RFC 5280}},
    pagetotal = 9,
    year =      2017,
    month =     oct,
    day =       12,
    abstract =  {The updates to RFC 5280 described in this document provide alignment with the 2008 specification for Internationalized Domain Names (IDNs) and add support for internationalized email addresses in X.509 certificates.},
}