%% You should probably cite rfc6262 instead of this I-D.
@techreport{ietf-avt-rtp-ipmr-15,
    number =    {draft-ietf-avt-rtp-ipmr-15},
    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-ipmr/15/},
    author =    {Sergey Ikonin},
    title =     {{RTP Payload Format for IP-MR Speech Codec}},
    pagetotal = 19,
    year =      2011,
    month =     jan,
    day =       11,
    abstract =  {This document specifies the payload format for packetization of SPIRIT IP-MR encoded speech signals into the Real-time Transport Protocol (RTP). The payload format supports transmission of multiple frames per packet and introduces redundancy for robustness against packet loss and bit errors. {[}STANDARDS-TRACK{]}},
}