%% You should probably cite draft-birkholz-rats-tuda instead of this I-D.
@techreport{birkholz-i2nsf-tuda-03,
    number =    {draft-birkholz-i2nsf-tuda-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-birkholz-i2nsf-tuda/03/},
    author =    {Andreas Fuchs and Henk Birkholz and Ira McDonald and Carsten Bormann},
    title =     {{Time-Based Uni-Directional Attestation}},
    pagetotal = 68,
    year =      2018,
    month =     may,
    day =       2,
    abstract =  {This memo documents the method and bindings used to conduct time- based uni-directional attestation between distinguishable endpoints over the network.},
}