%% You should probably cite draft-ietf-idnabis-protocol instead of this I-D.
@techreport{klensin-idnabis-protocol-04,
    number =    {draft-klensin-idnabis-protocol-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-klensin-idnabis-protocol/04/},
    author =    {Dr. John C. Klensin},
    title =     {{Internationalizing Domain Names in Applications (IDNA): Protocol}},
    pagetotal = 17,
    year =      2008,
    month =     feb,
    day =       7,
    abstract =  {This document supplies the protocol definition for a revised and updated specification for internationalized domain names (IDNs). The rationale for these changes, the relationship to the older specification, and important terminology are provided in other documents. This document specifies the protocol mechanism, called Internationalizing Domain Names in Applications (IDNA), for registering and looking up IDNs in a way that does not require changes to the DNS itself. IDNA is only meant for processing domain names, not free text.},
}