%% You should probably cite draft-ietf-pce-association-bidir instead of this I-D.
@techreport{barth-pce-association-bidir-01,
    number =    {draft-barth-pce-association-bidir-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-barth-pce-association-bidir/01/},
    author =    {Colby Barth and Rakesh Gandhi and Bin Wen},
    title =     {{PCEP Extensions for Associated Bidirectional Label Switched Paths (LSPs) with Stateful PCE}},
    pagetotal = 12,
    year =      2017,
    month =     mar,
    day =       13,
    abstract =  {The Path Computation Element Communication Protocol (PCEP) provides mechanisms for Path Computation Elements (PCEs) to perform path computations in response to Path Computation Clients (PCCs) requests.},
}