%% You should probably cite rfc8727 instead of this I-D.
@techreport{ietf-mile-jsoniodef-03,
    number =    {draft-ietf-mile-jsoniodef-03},
    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-mile-jsoniodef/03/},
    author =    {Takeshi Takahashi and Roman Danyliw and Mio Suzuki},
    title =     {{JSON binding of IODEF}},
    pagetotal = 39,
    year =      2018,
    month =     mar,
    day =       18,
    abstract =  {RFC7970 specified an information model and a corresponding XML data model for exchanging incident and indicator information. This draft provides an alternative data model implementation in JSON.},
}