%% You should probably cite draft-ietf-pce-bier-te instead of this I-D.
@techreport{chen-pce-bier-03,
    number =    {draft-chen-pce-bier-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-chen-pce-bier/03/},
    author =    {Ran Chen and Zheng Zhang},
    title =     {{PCEP Extensions for BIER}},
    pagetotal = 10,
    year =      2018,
    month =     feb,
    day =       7,
    abstract =  {Bit Index Explicit Replication (BIER)-TE shares architecture and packet formats with BIER as described in {[}I-D.ietf-bier-architecture{]}. BIER-TE forwards and replicates packets based on a BitString in the packet header, but every BitPosition of the BitString of a BIER-TE packet indicates one or more adjacencies.BIER-TE Path can be derived from a Path Computation Element (PCE). This document specifies extensions to the Path Computation Element Protocol (PCEP) to handle requests and responses for the computation of paths for BIER-TE.},
}