%% You should probably cite rfc7656 instead of this I-D.
@techreport{ietf-avtext-rtp-grouping-taxonomy-02,
    number =    {draft-ietf-avtext-rtp-grouping-taxonomy-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-ietf-avtext-rtp-grouping-taxonomy/02/},
    author =    {Jonathan Lennox and Kevin Gross and Suhas Nandakumar and Gonzalo Salgueiro and Bo Burman},
    title =     {{A Taxonomy of Grouping Semantics and Mechanisms for Real-Time Transport Protocol (RTP) Sources}},
    pagetotal = 41,
    year =      2014,
    month =     jun,
    day =       27,
    abstract =  {The terminology about, and associations among, Real-Time Transport Protocol (RTP) sources can be complex and somewhat opaque. This document describes a number of existing and proposed relationships among RTP sources, and attempts to define common terminology for discussing protocol entities and their relationships.},
}