%% You should probably cite rfc7025 instead of this I-D.
@techreport{ietf-pce-gmpls-aps-req-07,
    number =    {draft-ietf-pce-gmpls-aps-req-07},
    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-pce-gmpls-aps-req/07/},
    author =    {Tomohiro Otani and Kenichi Ogaki and Diego Caviglia and Fatai Zhang},
    title =     {{Requirements for GMPLS applications of PCE}},
    pagetotal = 13,
    year =      2013,
    month =     mar,
    day =       12,
    abstract =  {The initial effort of the 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).},
}