%% You should probably cite draft-ietf-spring-mpls-path-segment instead of this I-D.
@techreport{cheng-spring-mpls-path-segment-00,
    number =    {draft-cheng-spring-mpls-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-cheng-spring-mpls-path-segment/00/},
    author =    {Weiqiang Cheng and Lei Wang and Han Li and Mach Chen and Royi Zigler and Shuangping Zhan},
    title =     {{Path Segment in MPLS Based Sement Routing Network}},
    pagetotal = 10,
    year =      2017,
    month =     oct,
    day =       30,
    abstract =  {An SR path is identified by an SR segment list, one or partial segments of the list cannot uniquely identify the SR path. This document introduces the concept of Path Segment that is used to identify an SR path. When used, it is inserted at the ingress node of the SR path and immediately follows the last segment of the SR path. The Path Segment will not be popped off until it reaches the egress of the SR path, it can be used by the egress node to implement end-2-end SR path protection or performance measurement (PM) of an SR path.},
}