%% You should probably cite rfc7613 instead of this I-D.
@techreport{ietf-precis-saslprepbis-04,
    number =    {draft-ietf-precis-saslprepbis-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-precis-saslprepbis/04/},
    author =    {Peter Saint-Andre and Alexey Melnikov},
    title =     {{Preparation and Comparison of Internationalized Strings Representing Usernames and Passwords}},
    pagetotal = 14,
    year =      2013,
    month =     aug,
    day =       5,
    abstract =  {This document describes how to handle Unicode strings representing usernames and passwords. This profile is intended to be used by protocols that exchange or otherwise make use of usernames and passwords. This document obsoletes RFC 4013.},
}