%% You should probably cite draft-ietf-pce-gmpls-aps-req instead of this I-D.
@techreport{otani-pce-gmpls-aps-req-02,
    number =    {draft-otani-pce-gmpls-aps-req-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-otani-pce-gmpls-aps-req/02/},
    author =    {Tomohiro Otani and Kenichi Ogaki},
    title =     {{Requirements for GMPLS applications of PCE}},
    pagetotal = 8,
    year =      2008,
    month =     jul,
    day =       14,
    abstract =  {The initial effort of PCE WG is specifically focused on MPLS (Multi- protocol label switching). As a next step, this draft describes functional requirements for GMPLS (Generalized MPLS) application of PCE (Path computation element).},
}