%% You should probably cite rfc9338 instead of this I-D.
@techreport{ietf-cose-countersign-09,
    number =    {draft-ietf-cose-countersign-09},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-cose-countersign/09/},
    author =    {Jim Schaad and Russ Housley},
    title =     {{CBOR Object Signing and Encryption (COSE): Countersignatures}},
    pagetotal = 23,
    year =      2022,
    month =     aug,
    day =       31,
    abstract =  {Concise Binary Object Representation (CBOR) is a data format designed for small code size and small message size. CBOR Object Signing and Encryption (COSE) defines a set of security services for CBOR. This document defines a countersignature algorithm along with the needed header parameters and CBOR tags for COSE. This document updates RFC 9052.},
}