%% You should probably cite draft-birkholz-rats-reference-interaction-model instead of this I-D.
@techreport{birkholz-reference-ra-interaction-model-01,
    number =    {draft-birkholz-reference-ra-interaction-model-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-birkholz-reference-ra-interaction-model/01/},
    author =    {Henk Birkholz and Michael Eckel},
    title =     {{Reference Interaction Model for Challenge-Response-based Remote Attestation}},
    pagetotal = 8,
    year =      2019,
    month =     jan,
    day =       2,
    abstract =  {This document defines an interaction model for a basic remote attestation procedure. Additionally, the required information elements are illustrated.},
}