%% You should probably cite draft-ietf-ace-actors instead of this I-D.
@techreport{seitz-ace-problem-description-00,
    number =    {draft-seitz-ace-problem-description-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-seitz-ace-problem-description/00/},
    author =    {Ludwig Seitz and Göran Selander},
    title =     {{Problem Description for Authorization in Constrained Environments}},
    pagetotal = 14,
    year =      2014,
    month =     may,
    day =       17,
    abstract =  {We present a problem description for authentication and authorization in constrained-node networks, i.e. networks which contain some devices with severe constraints on power, memory, and processing resources.},
}