%% You should probably cite rfc9059 instead of this I-D.
@techreport{ietf-pce-association-bidir-14,
    number =    {draft-ietf-pce-association-bidir-14},
    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-association-bidir/14/},
    author =    {Rakesh Gandhi and Colby Barth and Bin Wen},
    title =     {{Path Computation Element Communication Protocol (PCEP) Extensions for Associated Bidirectional Label Switched Paths (LSPs)}},
    pagetotal = 20,
    year =      2021,
    month =     feb,
    day =       21,
    abstract =  {This document defines Path Computation Element Communication Protocol (PCEP) extensions for grouping two unidirectional MPLS-TE Label Switched Paths (LSPs), one in each direction in the network, into an associated bidirectional LSP. These PCEP extensions can be applied either using a stateful PCE for both PCE-initiated and PCC-initiated LSPs or using a stateless PCE. The PCEP procedures defined are applicable to the LSPs using RSVP-TE for signaling.},
}