%% You should probably cite draft-ietf-sipping-race-examples instead of this I-D.
@techreport{hasebe-sipping-race-examples-02,
    number =    {draft-hasebe-sipping-race-examples-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-hasebe-sipping-race-examples/02/},
    author =    {Miki Hasebe and Jun Koshiko and Yasushi Suzuki and Tomoyuki Yoshikawa and Paul Kyzivat},
    title =     {{Examples call flow in race condition on Session Initiation Protocol}},
    pagetotal = 51,
    year =      2006,
    month =     oct,
    day =       24,
    abstract =  {This document gives examples of Session Initiation Protocol (SIP) call flows in race condition. Call flows in race conditions are confusing and this document shows the best practices to handle them. The elements in these call flows include SIP User Agents and SIP Proxies. Call flow diagrams and message details are shown.},
}