%% You should probably cite rfc6679 instead of this I-D.
@techreport{ietf-avtcore-ecn-for-rtp-06,
    number =    {draft-ietf-avtcore-ecn-for-rtp-06},
    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-avtcore-ecn-for-rtp/06/},
    author =    {Magnus Westerlund and Ingemar Johansson and Colin Perkins and Ken Carlberg},
    title =     {{Explicit Congestion Notification (ECN) for RTP over UDP}},
    pagetotal = 56,
    year =      2012,
    month =     feb,
    day =       17,
    abstract =  {This memo specifies how Explicit Congestion Notification (ECN) can be used with the Real-time Transport Protocol (RTP) running over UDP, using RTP Control Protocol (RTCP) as a feedback mechanism. It defines a new RTCP Extended Report (XR) block for periodic ECN feedback, a new RTCP transport feedback message for timely reporting of congestion events, and a Session Traversal Utilities for NAT (STUN) extension used in the optional initialization method using Interactive Connectivity Establishment (ICE). Signalling and procedures for negotiation of capabilities and initialization methods are also defined.},
}