%% You should probably cite rfc7093 instead of this I-D.
@techreport{turner-additional-methods-4kis-07,
    number =    {draft-turner-additional-methods-4kis-07},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-turner-additional-methods-4kis/07/},
    author =    {Sean Turner and Stephen Kent and James Manger},
    title =     {{Additional Methods for Generating Subject Key Identifiers and Subject Key Identifier Semantics Extension}},
    pagetotal = 12,
    year =      2012,
    month =     jul,
    day =       4,
    abstract =  {This document specifies additional methods for generating Subject Key Identifiers (SKI). This document also specifies an extension to identify the algorithms used to generate the SKI.},
}