%% You should probably cite draft-ietf-roll-applicability-template instead of this I-D.
@techreport{richardson-roll-applicability-template-02,
    number =    {draft-richardson-roll-applicability-template-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-richardson-roll-applicability-template/02/},
    author =    {Michael Richardson},
    title =     {{ROLL Applicability Statement Template}},
    pagetotal = 15,
    year =      2013,
    month =     feb,
    day =       20,
    abstract =  {This document is a template applicability statement for the Routing over Low-power and Lossy Networks (ROLL) WG.},
}