%% You should probably cite draft-ietf-ccamp-flexible-grid-rsvp-te-ext instead of this I-D.
@techreport{zhang-ccamp-flexible-grid-rsvp-te-ext-00,
    number =    {draft-zhang-ccamp-flexible-grid-rsvp-te-ext-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-zhang-ccamp-flexible-grid-rsvp-te-ext/00/},
    author =    {Daniele Ceccarelli and Fatai Zhang and Oscar Gonzalez de Dios},
    title =     {{RSVP-TE Signaling Extensions in support of Flexible Grid}},
    pagetotal = 12,
    year =      2011,
    month =     oct,
    day =       16,
    abstract =  {This memo describes the signaling extensions of GMPLS control of flexible grid network.},
}