%% You should probably cite draft-ietf-precis-mappings instead of this I-D.
@techreport{yoneya-precis-mappings-01,
    number =    {draft-yoneya-precis-mappings-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-yoneya-precis-mappings/01/},
    author =    {Takahiro Nemoto},
    title =     {{Mapping characters for PRECIS classes}},
    pagetotal = 15,
    year =      2012,
    month =     feb,
    day =       10,
    abstract =  {Preparation and comparison of internationalized strings ("PRECIS") Framework {[}I-D.ietf-precis-framework{]} is defining several classes of strings for preparation and comparison. In the document, case mapping is defined because many of protocols handle case sensitive or case insensitive string comparison and therefore preparation of string is mandatory. As described in IDNA mapping {[}RFC5895{]} and PRECIS problem statement {[}I-D.ietf-precis-problem-statement{]}, mappings in internationalized strings are not limited to case, but also width, delimiters and/or other specials are taken into consideration. This document considers mappings other than case mapping in PRECIS context.},
}