%% You should probably cite draft-bormann-cbor-cddl-freezer instead of this I-D.
@techreport{bormann-cddl-freezer-00,
    number =    {draft-bormann-cddl-freezer-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-bormann-cddl-freezer/00/},
    author =    {Carsten Bormann},
    title =     {{A feature freezer for the Concise Data Definition Language (CDDL)}},
    pagetotal = 5,
    year =      2018,
    month =     jan,
    day =       27,
    abstract =  {In defining the Concise Data Definition Language (CDDL), some features have turned up that would be nice to have. In the interest of completing this specification in a timely manner, the present document collects nice-to-have features that did not make it into the first RFC for CDDL.},
}