%% You should probably cite rfc7613 instead of this I-D.
@techreport{ietf-precis-saslprepbis-14,
    number =    {draft-ietf-precis-saslprepbis-14},
    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/14/},
    author =    {Peter Saint-Andre and Alexey Melnikov},
    title =     {{Preparation, Enforcement, and Comparison of Internationalized Strings Representing Usernames and Passwords}},
    pagetotal = 22,
    year =      2015,
    month =     mar,
    day =       2,
    abstract =  {This document describes methods for handling Unicode strings representing usernames and passwords. The methods specified in this document provide a more sustainable approach to the handling of internationalized usernames and passwords than the previous approach, known as SASLprep (RFC 4013) and based on Stringprep (RFC 3454). This document obsoletes RFC 4013.},
}