%% You should probably cite rfc4352 instead of this I-D.
@techreport{ietf-avt-rtp-amrwbplus-07,
    number =    {draft-ietf-avt-rtp-amrwbplus-07},
    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-avt-rtp-amrwbplus/07/},
    author =    {Stephan Wenger and Johan Sjoberg and Ari Lakaniemi and Magnus Westerlund},
    title =     {{RTP Payload Format for the Extended Adaptive Multi-Rate Wideband (AMR-WB+) Audio Codec}},
    pagetotal = 38,
    year =      2005,
    month =     sep,
    day =       22,
    abstract =  {This document specifies a Real-time Transport Protocol (RTP) payload format for Extended Adaptive Multi-Rate Wideband (AMR-WB+) encoded audio signals. The AMR-WB+ codec is an audio extension of the AMR-WB speech codec. It encompasses the AMR-WB frame types and a number of new frame types designed to support high-quality music and speech. A media type registration for AMR-WB+ is included in this specification. {[}STANDARDS-TRACK{]}},
}