%% You should probably cite draft-ietf-dice-profile instead of this I-D.
@techreport{hartke-dice-profile-03,
    number =    {draft-hartke-dice-profile-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-hartke-dice-profile/03/},
    author =    {Klaus Hartke and Hannes Tschofenig},
    title =     {{A DTLS 1.2 Profile for the Internet of Things}},
    pagetotal = 20,
    year =      2014,
    month =     feb,
    day =       14,
    abstract =  {This document defines a DTLS profile that is suitable for Internet of Things applications and is reasonably implementable on many constrained devices.},
}