%% You should probably cite draft-ietf-core-senml-versions instead of this I-D.
@techreport{bormann-core-senml-versions-00,
    number =    {draft-bormann-core-senml-versions-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-bormann-core-senml-versions/00/},
    author =    {Carsten Bormann},
    title =     {{SenML: Features and Versions}},
    pagetotal = 5,
    year =      ,
    month =     ,
    day =       ,
    abstract =  {The Sensor Measurement Lists (SenML) specification provides a version number that is set to the number 10 in RFC 8428, without further specification on the way to make use of different version numbers. This short document specifies the use of "SenML Features" and maps them to SenML version numbers, updating RFC 8428.},
}