%% You should probably cite draft-ietf-ppsp-reqs instead of this I-D.
@techreport{zong-ppsp-reqs-04,
    number =    {draft-zong-ppsp-reqs-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-zong-ppsp-reqs/04/},
    author =    {Ning Zong and Yunfei Zhang and Carl Williams and Lin Xiao},
    title =     {{P2P Streaming Protocol (PPSP) Requirements}},
    pagetotal = 14,
    year =      2010,
    month =     jul,
    day =       11,
    abstract =  {The objective of the PPSP work is to standardize the key signaling protocols that apply to tracker and peers in a Peer-to-Peer (P2P) streaming system. These protocols are called PPSP. This document enumerates the requirements for the PPSP, which should be considered when designing PPSP.},
}