%% You should probably cite draft-ietf-idnabis-bidi instead of this I-D.
@techreport{alvestrand-idna-bidi-04,
    number =    {draft-alvestrand-idna-bidi-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-alvestrand-idna-bidi/04/},
    author =    {Cary Karp and Harald T. Alvestrand},
    title =     {{An updated IDNA criterion for right-to-left scripts}},
    pagetotal = 17,
    year =      2008,
    month =     feb,
    day =       14,
    abstract =  {The use of right-to-left scripts in internationalized domain names has presented several challenges. This memo discusses some problems with these scripts, and some shortcomings in the 2003 IDNA BIDI criterion. Based on this discussion, it proposes a new BIDI criterion for IDNA labels.},
}