%% You should probably cite draft-ietf-acme-rats instead of this I-D.
@techreport{liu-acme-rats-00,
    number =    {draft-liu-acme-rats-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-liu-acme-rats/00/},
    author =    {Peter Chunchi Liu},
    title =     {{Automated Certificate Management Environment (ACME) rats Identifier and Challenge Type}},
    pagetotal = 8,
    year =      ,
    month =     ,
    day =       ,
    abstract =  {This document describes an approach where ACME Client can prove possession of a Remote Attestation Result to an ACME Server.},
}