%% You should probably cite draft-ietf-mmusic-duplication-grouping instead of this I-D.
@techreport{begen-mmusic-redundancy-grouping-02,
    number =    {draft-begen-mmusic-redundancy-grouping-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-begen-mmusic-redundancy-grouping/02/},
    author =    {Ali C. Begen and Yiqun Cai and Heidi Ou},
    title =     {{Duplication Grouping Semantics in the Session Description Protocol}},
    pagetotal = 13,
    year =      ** No value found for 'doc.pub_date.year' **,
    month =     ** No value found for 'doc.pub_date' **,
    day =       ** No value found for 'doc.pub_date.day' **,
    abstract =  {Packet loss is undesirable for real-time multimedia sessions, but it is not avoidable due to congestion or other unplanned network outages. This is especially the case for IP multicast networks. One technique to recover from packet loss without incurring unbounded delay for all the receivers is to duplicate the packets and send them in separate redundant streams. This document defines the semantics for grouping redundant streams in the Session Description Protocol (SDP). The semantics defined in this document are to be used with the SDP Grouping Framework {[}RFC5888{]}. SSRC-level (Synchronization Source) grouping semantics are also defined in this document for RTP streams using SSRC multiplexing.},
}