%% You should probably cite draft-ietf-idr-bgp-ls-sr-policy-path-segment instead of this I-D.
@techreport{li-idr-bgp-ls-sr-policy-path-segment-00,
    number =    {draft-li-idr-bgp-ls-sr-policy-path-segment-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-li-idr-bgp-ls-sr-policy-path-segment/00/},
    author =    {Cheng Li and Mach Chen and Jie Dong and Zhenbin Li},
    title =     {{SR Policies for Path Segment and Bi-directional Path in BGP-LS}},
    pagetotal = 8,
    year =      2018,
    month =     apr,
    day =       4,
    abstract =  {This document specifies the way of collecting configuration and states of SR policies carrying path ID and bi-directional path information by using BPG-LS. Such information can be used by external conponents for many use cases such as performance measurement, path re-optimization and end-to-end protection.},
}