%% You should probably cite rfc9193 instead of this I-D.
@techreport{ietf-core-senml-data-ct-07,
    number =    {draft-ietf-core-senml-data-ct-07},
    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-core-senml-data-ct/07/},
    author =    {Ari Keränen and Carsten Bormann},
    title =     {{Sensor Measurement Lists (SenML) Fields for Indicating Data Value Content-Format}},
    pagetotal = 10,
    year =      2021,
    month =     oct,
    day =       21,
    abstract =  {The Sensor Measurement Lists (SenML) media types support multiple types of values, from numbers to text strings and arbitrary binary Data Values. In order to facilitate processing of binary Data Values, this document specifies a pair of new SenML fields for indicating the content format of those binary Data Values, i.e., their Internet media type, including parameters as well as any content codings applied.},
}