%% You should probably cite rfc6972 instead of this I-D.
@techreport{ietf-ppsp-problem-statement-09,
    number =    {draft-ietf-ppsp-problem-statement-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-ppsp-problem-statement/09/},
    author =    {Yunfei Zhang and Ning Zong},
    title =     {{Problem Statement and Requirements of Peer-to-Peer Streaming Protocol (PPSP)}},
    pagetotal = 26,
    year =      2012,
    month =     jul,
    day =       2,
    abstract =  {Peer-to-Peer (P2P for short) streaming systems show more and more popularity in current Internet with proprietary protocols. This document identifies problems of the proprietary protocols, proposes a Peer to Peer Streaming Protocol (PPSP) including tracker and peer signaling, and discusses the design scope, requirements and uses cases of PPSP.},
}