%% You should probably cite rfc7890 instead of this I-D.
@techreport{ietf-p2psip-concepts-09,
    number =    {draft-ietf-p2psip-concepts-09},
    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-p2psip-concepts/09/},
    author =    {David A. Bryan and Philip Matthews and Eunsoo Shim and Dean Willis and Spencer Dawkins},
    title =     {{Concepts and Terminology for Peer-to-Peer SIP (P2PSIP)}},
    pagetotal = 19,
    year =      2016,
    month =     apr,
    day =       21,
    abstract =  {This document defines concepts and terminology for using the Session Initiation Protocol in a peer-to-peer environment where the traditional proxy-registrar and message-routing functions are replaced by a distributed mechanism. These mechanisms may be implemented using a Distributed Hash Table or other distributed data mechanism with similar external properties. This document includes a high-level view of the functional relationships between the network elements defined herein, a conceptual model of operations, and an outline of the related problems addressed by the P2PSIP working group, the REsource LOcation And Discovery (RELOAD) protocol, and the SIP usage document defined by the working group.},
}