%% You should probably cite draft-ietf-payload-rtp-aptx instead of this I-D.
@techreport{lindsay-payload-rtp-aptx-00,
    number =    {draft-lindsay-payload-rtp-aptx-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-lindsay-payload-rtp-aptx/00/},
    author =    {John Lindsay and Hartmut Foerster},
    title =     {{RTP Payload Format for Standard apt-X and Enhanced apt-X Codecs}},
    pagetotal = 22,
    year =      2012,
    month =     nov,
    day =       28,
    abstract =  {This document specifies a scheme for packetizing Standard apt-X, or Enhanced apt-X, encoded audio data into Real-time Transport Protocol (RTP) packets. The document describes a payload format that permits transmission of multiple related audio channels in a single RTP payload, and a means of establishing Standard apt-X and Enhanced apt-X connections through the Session Description Protocol (SDP).},
}